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A truck or lorry is a
motor vehicle A motor vehicle, also known as motorized vehicle or automotive vehicle, is a self-propelled land vehicle, commonly wheeled, that does not operate on Track (rail transport), rails (such as trains or trams) and is used for the transportation of pe ...
designed to transport
cargo Cargo consists of bulk goods conveyed by water, air, or land. In economics, freight is cargo that is transported at a freight rate for commercial gain. ''Cargo'' was originally a shipload but now covers all types of freight, including trans ...
, carry specialized payloads, or perform other utilitarian work. Trucks vary greatly in size, power, and configuration, but the vast majority feature
body-on-frame Body-on-frame, also known as ladder frame construction, is a common motor vehicle construction method, whereby a separate body or coach is mounted on a strong and relatively rigid vehicle frame or chassis that carries the powertrain (the engin ...
construction, with a cabin that is independent of the payload portion of the vehicle. Smaller varieties may be mechanically similar to some
automobile A car or automobile is a motor vehicle with Wheel, wheels. Most definitions of ''cars'' say that they run primarily on roads, Car seat, seat one to eight people, have four wheels, and mainly transport private transport#Personal transport, pe ...
s. Commercial trucks can be very large and powerful and may be configured to be mounted with specialized equipment, such as in the case of
refuse truck A garbage truck is a truck specially designed to collect municipal solid waste and transport it to a solid waste treatment facility, such as a landfill, recycling center or transfer station. In Australia they are commonly called rubbish truc ...
s,
fire truck A fire engine (also known in some places as a fire truck or fire lorry) is a road vehicle (usually a truck) that functions as a firefighting apparatus. The primary purposes of a fire engine include transporting firefighters and water to an i ...
s,
concrete mixer A concrete mixer (often colloquially called a cement mixer) is a device that homogeneously combines cement, aggregate such as sand or gravel, and water to form concrete. A typical concrete mixer uses a revolving drum to mix the components. F ...
s, and suction excavators. In American English, a commercial vehicle without a trailer or other articulation is formally a "straight truck" while one designed specifically to pull a trailer is not a truck but a "
tractor A tractor is an engineering vehicle specifically designed to deliver a high tractive effort (or torque) at slow speeds, for the purposes of hauling a trailer or machinery such as that used in agriculture, mining or construction. Most common ...
". The majority of trucks currently in use are still powered by
diesel engine The diesel engine, named after Rudolf Diesel, is an internal combustion engine in which ignition of the fuel is caused by the elevated temperature of the air in the cylinder due to mechanical compression; thus, the diesel engine is a so-call ...
s, although small- to medium-size trucks with
gasoline engine A petrol engine (gasoline engine in American English) is an internal combustion engine designed to run on petrol (gasoline). Petrol engines can often be adapted to also run on fuels such as liquefied petroleum gas and ethanol blends (such as ''E ...
s exist in the US, Canada, and Mexico. The market-share of electrically powered trucks is growing rapidly, expected to reach 7% globally by 2027, and electric motive force already predominates among both the largest and smallest trucks. In the European Union, vehicles with a
gross combination mass Vehicle weight is a measurement of wheeled motor vehicles; either an actual measured weight of the vehicle under defined conditions or a gross weight rating for its weight carrying capacity. Curb or kerb weight Curb weight (U.S. English) or kerb ...
of up to are known as
light commercial vehicle A light commercial vehicle (LCV) in the European Union, Australia and New Zealand is a commercial carrier vehicle with a gross vehicle weight of no more than 3.5 metric tons (tonnes). The LCV designation is also occasionally used in both Canad ...
s, and those over as large goods vehicles.


History


Steam wagons

Trucks and cars have a common ancestor: the steam-powered ''fardier''
Nicolas-Joseph Cugnot Nicolas-Joseph Cugnot (26 February 1725 – 2 October 1804) was a French inventor who built the world's first full-size and working self-propelled mechanical land-vehicle, the "Fardier à vapeur" – effectively the world's first automobile. B ...
built in 1769. However,
steam wagon A steam wagon (or steam lorry, steam waggon or steamtruck) is a steam-powered truck for carrying freight. It was the earliest form of lorry (truck) and came in two basic forms: ''overtype'' and ''undertype'', the distinction being the position of ...
s were not common until the mid-19th century. The roads of the time, built for horse and carriages, limited these vehicles to very short hauls, usually from a factory to the nearest railway station. The first
semi-trailer A semi-trailer is a trailer without a front axle. In the United States, the term is also used to refer to the combination of a truck and a semi-trailer; a tractor-trailer. A large proportion of a semi-trailer's weight is supported by a tracto ...
appeared in 1881, towed by a
steam tractor :''This article refers to the steam-powered agricultural tractor; for other types of steam tractor, see: Traction engine'' A steam tractor is a vehicle powered by a steam engine which is used for pulling. In North America, the term ''steam t ...
manufactured by
De Dion-Bouton De Dion-Bouton was a French automobile manufacturer and railcar manufacturer operating from 1883 to 1953. The company was founded by the Marquis Jules-Albert de Dion, Georges Bouton, and Bouton's brother-in-law Charles Trépardoux. Steam cars T ...
. Steam-powered wagons were sold in France and the United States until the eve of
World War I World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, the United States, and the Ottoman Empire, with fightin ...
, and 1935 in the United Kingdom, when a change in road tax rules made them uneconomic against the new diesel lorries.


Internal combustion

In 1895
Karl Benz Carl Friedrich Benz (; 25 November 1844 – 4 April 1929), sometimes also Karl Friedrich Benz, was a German engine designer and automotive engineer. His Benz Patent Motorcar from 1885 is considered the first practical modern automobile and fir ...
designed and built the first
internal combustion An internal combustion engine (ICE or IC engine) is a heat engine in which the combustion of a fuel occurs with an oxidizer (usually air) in a combustion chamber that is an integral part of the working fluid flow circuit. In an internal combus ...
truck. Later that year some of Benz's trucks were modified to become busses by ''Netphener''. A year later, in 1896, another internal combustion engine truck was built by
Gottlieb Daimler Gottlieb Wilhelm Daimler (; 17 March 1834 – 6 March 1900) was a German engineer, industrial designer and industrialist born in Schorndorf (Kingdom of Württemberg, a federal state of the German Confederation), in what is now Germany. He was a ...
, the Daimler Motor Lastwagen. Other companies, such as
Peugeot Peugeot (, , ) is a French brand of automobiles owned by Stellantis. The family business that preceded the current Peugeot companies was founded in 1810, with a steel foundry that soon started making hand tools and kitchen equipment, and the ...
,
Renault Groupe Renault ( , , , also known as the Renault Group in English; legally Renault S.A.) is a French multinational automobile manufacturer established in 1899. The company produces a range of cars and vans, and in the past has manufactured ...
and
Büssing Büssing AG was a German bus and truck manufacturer, established in 1903 by Heinrich Büssing (1843–1929) in Braunschweig. It quickly evolved to one of the largest European producers, whose utility vehicles with the Brunswick Lion emblem were w ...
, also built their own versions. The first truck in the United States was built by Autocar in 1899 and was available with engines. Trucks of the era mostly used two-cylinder engines and had a carrying capacity of . After World War I, several advances were made: electric starters, and 4, 6, and 8 cylinder engines.


Diesel engines

Although it had been invented in 1897, the
diesel engine The diesel engine, named after Rudolf Diesel, is an internal combustion engine in which ignition of the fuel is caused by the elevated temperature of the air in the cylinder due to mechanical compression; thus, the diesel engine is a so-call ...
did not appear in production trucks until Benz introduced it in 1923. The diesel engine was not common in trucks in Europe until the 1930s. In the United States, Autocar introduced diesel engines for heavy applications in the mid-1930s. Demand was high enough that Autocar launched the "DC" model (diesel conventional) in 1939. However, it took much longer for diesel engines to be broadly accepted in the US: gasoline engines were still in use on heavy trucks in the 1970s.


Electric Motors

Electrically powered trucks predate internal combustion ones and have been continuously available since the mid-19th-century. In the 1920s Autocar Trucks was the first of the major truck manufacturers to offer a range of electric trucks for sale. Electric trucks were successful for urban delivery roles and as specialized work vehicles like
forklifts A forklift (also called lift truck, jitney, hi-lo, fork truck, fork hoist, and forklift truck) is a powered industrial truck used to lift and move materials over short distances. The forklift was developed in the early 20th century by various ...
and pushback tugs. The higher energy density of liquid fuels soon led to the decline of electric-powered trucks in favor of, first, gasoline, and then diesel and CNG-fueled engines until battery technology advanced in the 2000s when new chemistries and higher-volume production broadened the range of applicability of electric propulsion to trucks in many more roles. Today, manufacturers are electrifying all trucks ahead of national regulatory requirements, with long-range over-the-road trucks being the most challenging.


Etymology

''Truck'' is used in
American English American English, sometimes called United States English or U.S. English, is the set of variety (linguistics), varieties of the English language native to the United States. English is the Languages of the United States, most widely spoken lan ...
, and is common in
Canada Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by tot ...
,
Australia Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma ...
,
New Zealand New Zealand ( mi, Aotearoa ) is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and over 700 smaller islands. It is the sixth-largest island count ...
,
Pakistan Pakistan ( ur, ), officially the Islamic Republic of Pakistan ( ur, , label=none), is a country in South Asia. It is the world's List of countries and dependencies by population, fifth-most populous country, with a population of almost 24 ...
and
South Africa South Africa, officially the Republic of South Africa (RSA), is the southernmost country in Africa. It is bounded to the south by of coastline that stretch along the South Atlantic and Indian Oceans; to the north by the neighbouring countri ...
, while ''lorry'' is the equivalent in
British English British English (BrE, en-GB, or BE) is, according to Lexico, Oxford Dictionaries, "English language, English as used in Great Britain, as distinct from that used elsewhere". More narrowly, it can refer specifically to the English language in ...
, and is the usual term in countries like
Ireland Ireland ( ; ga, Éire ; Ulster Scots dialect, Ulster-Scots: ) is an island in the Atlantic Ocean, North Atlantic Ocean, in Northwestern Europe, north-western Europe. It is separated from Great Britain to its east by the North Channel (Grea ...
,
Malaysia Malaysia ( ; ) is a country in Southeast Asia. The federation, federal constitutional monarchy consists of States and federal territories of Malaysia, thirteen states and three federal territories, separated by the South China Sea into two r ...
,
Singapore Singapore (), officially the Republic of Singapore, is a sovereign island country and city-state in maritime Southeast Asia. It lies about one degree of latitude () north of the equator, off the southern tip of the Malay Peninsula, borde ...
and
India India, officially the Republic of India (Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the so ...
. The first known usage of "truck" was in 1611 when it referred to the small strong wheels on ships' cannon carriages, and comes from "Trokhos" (Greek) = "wheel". In its extended usage, it came to refer to carts for carrying heavy loads, a meaning known since 1771. Its expanded application to "motor-powered load carrier" has been in usage since 1930, shortened from "motor truck", which dates back to 1901. "Lorry" has a more uncertain origin, but probably has its roots in the
rail transport Rail transport (also known as train transport) is a means of transport that transfers passengers and goods on wheeled vehicles running on rails, which are incorporated in tracks. In contrast to road transport, where the vehicles run on a p ...
industry, where the word is known to have been used in 1838 to refer to a type of truck (a
goods wagon Goods wagons or freight wagons (North America: freight cars), also known as goods carriages, goods trucks, freight carriages or freight trucks, are unpowered railway vehicles that are used for the transportation of cargo. A variety of wagon type ...
as in British usage, not a
bogie A bogie ( ) (in some senses called a truck in North American English) is a chassis or framework that carries a wheelset, attached to a vehicle—a modular subassembly of wheels and axles. Bogies take various forms in various modes of transp ...
as in the American), specifically a large flat wagon. It might derive from the verb ''lurry'' (to carry or drag along, or to lug) which was in use as early as 1664, but that association is not definitive. The expanded meaning of ''lorry'', "self-propelled vehicle for carrying goods", has been in usage since 1911.


International variance

In the United States, Canada, and the Philippines, "truck" is usually reserved for commercial vehicles larger than regular passenger cars, but includes large SUVs, pickups, and other vehicles with an open load bed. In Australia, New Zealand and South Africa, the word "truck" is mostly reserved for larger vehicles. In Australia and New Zealand, a pickup truck is frequently called a ''ute'' (short for "utility" vehicle), while in South Africa it is called a ''bakkie'' (
Afrikaans Afrikaans (, ) is a West Germanic language that evolved in the Dutch Cape Colony from the Dutch vernacular of Holland proper (i.e., the Hollandic dialect) used by Dutch, French, and German settlers and their enslaved people. Afrikaans gra ...
: "small open container"). In the United Kingdom, India, Malaysia, Singapore, Ireland, and
Hong Kong Hong Kong ( (US) or (UK); , ), officially the Hong Kong Special Administrative Region of the People's Republic of China ( abbr. Hong Kong SAR or HKSAR), is a city and special administrative region of China on the eastern Pearl River Delt ...
''lorry'' is used instead of ''truck'', but only for the medium and heavy types, while ''truck'' is used almost exclusively to refer to pickups.


Types by size


Ultra light

Often produced as variations of
golf car A golf cart (alternatively known as a golf buggy or golf car) is a small motorized vehicle designed originally to carry two golfers and their golf clubs around a golf course with less effort than walking. Over time, variants were introduced t ...
s, with internal combustion or battery electric drive, these are used typically for off-highway use on estates, golf courses, and parks. While not suitable for highway use some variations may be licensed as slow speed vehicles for operation on streets, generally as a body variation of a neighborhood electric vehicle. A few manufactures produce specialized chassis for this type of vehicle, while Zap Motors markets a version of their Xebra electric tricycle (licensable in the U.S. as a motorcycle).


Very light

Popular in Europe and Asia, many mini-trucks are factory redesigns of light automobiles, usually with
monocoque Monocoque ( ), also called structural skin, is a structural system in which loads are supported by an object's external skin, in a manner similar to an egg shell. The word ''monocoque'' is a French term for "single shell". First used for boats, ...
bodies. Specialized designs with substantial frames such as the Italian Piaggio shown here are based upon Japanese designs (in this case by
Daihatsu , commonly known as Daihatsu, is a Japanese automobile manufacturer and one of the oldest surviving Japanese internal combustion engine manufacturers. The company's headquarters are located in Ikeda, Osaka Prefecture. Historically, Daihatsu was ...
) and are popular for use in "old town" sections of European cities that often have very narrow alleyways. Regardless of name, these small trucks serve a wide range of uses. In Japan, they are regulated under the
Kei car Kei car (or , kanji: , "light automobile", ), known variously outside Japan as Japanese city car or Japanese microcar, is the Japanese vehicle category for the smallest highway-legal passenger cars with restricted dimensions and engine capacit ...
laws, which allow vehicle owners a break in taxes for buying a smaller and less-powerful vehicle (currently, the engine is limited to 660 cc displacement). These vehicles are used as on-road utility vehicles in Japan. These Japanese-made mini trucks that were manufactured for on-road use are competing with off-road ATVs in the United States, and import regulations require that these mini trucks have a speed governor as they are classified as low-speed vehicles. These vehicles have found uses in construction, large campuses (government, university, and industrial), agriculture, cattle ranches, amusement parks, and replacements for golf carts. Major mini truck manufacturers and their brands: *
Daihatsu Hijet The is a cab over microvan and kei truck produced and sold by the Japanese automaker Daihatsu since 1960. Despite the similarities between the Hijet name and Toyota's naming scheme for its trucks and vans ( HiAce and Hilux), the name "Hijet" ...
*
Honda Acty The is a series of cabover microvans and kei trucks produced by the Japanese automaker Honda from 1977 to 2021, designed for the Japanese domestic market (JDM). "Acty" is short for "Activity". The Acty's primary competitors were the Subaru ...
*
Tata Ace Tata Ace are models of mini trucks manufactured by Tata Motors. It was launched in 2005. History In December 2000, Girish Wagh was given a brief by Ravi Kant (Indian executive), Ravi Kant to create a novel lightweight truck line that would add ...
*
Mazda Scrum Scrum may refer to: Sport * Scrum (rugby), a method of restarting play in rugby union and rugby league ** Scrum (rugby union), scrum in rugby union * Scrum, an offensive melee formation in Japanese game Bo-taoshi Media and popular culture * M ...
*
Mitsubishi Minicab The is the kei truck and microvan, built and sold in Japan by Japanese automaker Mitsubishi Motors since 1966. In Japan, it was sold at a specific retail chain called Galant Shop. An all-electric model of the Minicab, called the Minicab MiEV, ...
*
Subaru Sambar The Subaru Sambar is a cabover truck and microvan manufactured and marketed by Subaru as Japan's first truck compliant with the country's strict Keitora (軽トラ) or ''Kei'' vehicle tax class. Introduced in 1961 in microvan and Kei pickup con ...
*
Suzuki Carry The is a kei truck produced by the Japanese automaker Suzuki. The microvan version was originally called the Carry van until 1982 when the passenger van versions were renamed as the . In Japan, the Carry and Every are ''kei cars'' but the Suzuk ...


Light

Light trucks are car-sized (in the US, no more than ) and are used by individuals and businesses alike. In the EU they may not weigh more than and are allowed to be driven with a
driving licence A driver's license is a legal authorization, or the official document confirming such an authorization, for a specific individual to operate one or more types of motorized vehicles—such as motorcycles, cars, trucks, or buses—on a public ...
for cars.
Pickup truck A pickup truck or pickup is a light-duty truck that has an enclosed cabin, and a back end made up of a cargo bed that is enclosed by three low walls with no roof (this cargo bed back end sometimes consists of a tailgate and removable covering) ...
s, called utes in Australia and New Zealand, are common in North America and some regions of Latin America, Asia, and Africa, but not so in Europe, where this size of commercial vehicle is most often made as vans.


Medium

Medium trucks are larger than light but smaller than heavy trucks. In the US, they are defined as weighing between . For the UK and the EU the weight is between . Local delivery and public service (
dump truck A dump truck, known also as a dumping truck, dump trailer, dumper trailer, dump lorry or dumper lorry or a dumper for short, is used for transporting materials (such as dirt, gravel, or demolition waste) for construction as well as coal. A typi ...
s,
garbage truck A garbage truck is a truck specially designed to collect municipal solid waste and transport it to a solid waste treatment facility, such as a landfill, recycling center or transfer station. In Australia they are commonly called rubbish truc ...
s and fire-fighting trucks) are normally around this size.


Heavy

Heavy trucks are the largest on-road trucks, Class 8. These include vocational applications such as heavy dump trucks, concrete pump trucks, and refuse hauling, as well as ubiquitous long-haul 4x2 and 6×4
tractor unit A tractor unit (also known as a truck unit, power unit, prime mover, ten-wheeler, semi-tractor, tractor truck, semi-truck, tractor cab, truck cab, tractor rig, truck rig or big rig or simply a tractor, truck, semi or rig) is a characteristical ...
s. Road damage and wear increase very rapidly with the axle weight. The number of steering axles and the suspension type also influence the amount of the road wear. In many countries with good roads a six-axle truck may have a maximum weight of or more.


Off-road

Off-road trucks include standard, extra heavy-duty highway-legal trucks, typically outfitted with off-road features such as a front driving axle and special tires for applications such as logging and construction, and purpose-built off-road vehicles unconstrained by weight limits, such as the
Liebherr T 282B The Liebherr T 282 series are off-highway, ultra class, rigid frame, two axle, diesel-electric, AC powertrain haul trucks designed and manufactured in the United States by Liebherr Mining Equipment Co. The Liebherr T 282 series is no longer i ...
mining truck.


Maximum sizes by country

Australia has complex regulations over weight and length, including axle spacing, type of axle/axle group, rear overhang, kingpin to rear of trailer, drawbar length, ground clearance, as well as height and width laws. These limits are some of the highest in the world, a B-double can weigh and be long, and
road train A road train, land train or long combination vehicle (LCV) is a trucking vehicle used to move road freight more efficiently than semi-trailer trucks. It consists of two or more trailers or semi-trailers hauled by a prime mover. History Early ...
s used in the
outback The Outback is a remote, vast, sparsely populated area of Australia. The Outback is more remote than the bush. While often envisaged as being arid, the Outback regions extend from the northern to southern Australian coastlines and encompass a n ...
can weigh and be long. The European Union also has complex regulations. The number and spacing of axles, steering, single or dual tires, and suspension type all affect maximum weights. Length of a truck, of a trailer, from axle to hitch point, kingpin to rear of trailer, and turning radius are all regulated. In additions, there are special rules for carrying containers, and countries can set their own rules for local traffic. The United States Federal Bridge Law deals with the relation between the gross weight of the truck, the number of axles, the weight on and the spacing between the axles that the truck can have on the Interstate highway system. Each State determines the maximum permissible
vehicle A vehicle (from la, vehiculum) is a machine that transports people or cargo. Vehicles include wagons, bicycles, motor vehicles (motorcycles, cars, trucks, buses, mobility scooters for disabled people), railed vehicles (trains, trams), wa ...
,
combination In mathematics, a combination is a selection of items from a set that has distinct members, such that the order of selection does not matter (unlike permutations). For example, given three fruits, say an apple, an orange and a pear, there are th ...
, and
axle An axle or axletree is a central shaft for a rotating wheel or gear. On wheeled vehicles, the axle may be fixed to the wheels, rotating with them, or fixed to the vehicle, with the wheels rotating around the axle. In the former case, bearing ...
weight on state and local roads. Uniquely, the
State of Michigan Michigan () is a state in the Great Lakes region of the upper Midwestern United States. With a population of nearly 10.12 million and an area of nearly , Michigan is the 10th-largest state by population, the 11th-largest by area, and the ...
has a gross vehicle weight limit of , which is twice the U.S. federal limit. A measure to change the law was defeated in the
Michigan Senate The Michigan Senate is the upper house of the Michigan Legislature. Along with the Michigan House of Representatives, it composes the state legislature, which has powers, roles and duties defined by Article IV of the Michigan Constitution, ado ...
in 2019.


Design

Almost all trucks share a common construction: they are made of a
chassis A chassis (, ; plural ''chassis'' from French châssis ) is the load-bearing framework of an artificial object, which structurally supports the object in its construction and function. An example of a chassis is a vehicle frame, the underpart ...
, a cab, an area for placing
cargo Cargo consists of bulk goods conveyed by water, air, or land. In economics, freight is cargo that is transported at a freight rate for commercial gain. ''Cargo'' was originally a shipload but now covers all types of freight, including trans ...
or equipment,
axle An axle or axletree is a central shaft for a rotating wheel or gear. On wheeled vehicles, the axle may be fixed to the wheels, rotating with them, or fixed to the vehicle, with the wheels rotating around the axle. In the former case, bearing ...
s,
suspension Suspension or suspended may refer to: Science and engineering * Suspension (topology), in mathematics * Suspension (dynamical systems), in mathematics * Suspension of a ring, in mathematics * Suspension (chemistry), small solid particles suspend ...
and roadwheels, an
engine An engine or motor is a machine designed to convert one or more forms of energy into mechanical energy. Available energy sources include potential energy (e.g. energy of the Earth's gravitational field as exploited in hydroelectric power gen ...
and a
drivetrain A drivetrain (also frequently spelled as drive train or sometimes drive-train) is the group of components that deliver mechanical power from the prime mover to the driven components. In automotive engineering, the drivetrain is the components o ...
.
Pneumatic Pneumatics (from Greek ‘wind, breath’) is a branch of engineering that makes use of gas or pressurized air. Pneumatic systems used in Industrial sector, industry are commonly powered by compressed air or compressed inert gases. A central ...
,
hydraulic Hydraulics (from Greek: Υδραυλική) is a technology and applied science using engineering, chemistry, and other sciences involving the mechanical properties and use of liquids. At a very basic level, hydraulics is the liquid counter ...
,
water Water (chemical formula ) is an inorganic, transparent, tasteless, odorless, and nearly colorless chemical substance, which is the main constituent of Earth's hydrosphere and the fluids of all known living organisms (in which it acts as a ...
, and
electrical Electricity is the set of physical phenomena associated with the presence and motion of matter that has a property of electric charge. Electricity is related to magnetism, both being part of the phenomenon of electromagnetism, as described by ...
systems may also be present. Many also tow one or more
trailers Trailer may refer to: a Transportation * Trailer (vehicle), an unpowered vehicle pulled by a powered vehicle ** Bicycle trailer, a wheeled frame for hitching to a bicycle to tow cargo or passengers ** Full-trailer ** Semi-trailer **Horse trailer ...
or semi-trailers.


Cab

The "cab", or "cabin" is an enclosed space where the driver is seated. A " sleeper" is a compartment attached to or integral with the cab where the driver can rest while not driving, sometimes seen in semi-trailer trucks. There are several cab configurations: * "
Cab over Cab-over, also known as cab over engine (COE), cab forward (U.S.), flat nose (Canada), or forward control (UK), is a body style of truck, bus, or van that has a vertical front, "flat face" or a semi-hood, with the cab of the truck sitting a ...
engine" (COE) or "flat nose"; where the driver is seated above the front axle and the
engine An engine or motor is a machine designed to convert one or more forms of energy into mechanical energy. Available energy sources include potential energy (e.g. energy of the Earth's gravitational field as exploited in hydroelectric power gen ...
. This design is almost ubiquitous in Europe, where overall truck lengths are strictly regulated, and is widely used in the rest of the world. They were common in North American heavy-duty trucks but lost prominence when permitted length was extended in the early 1980s. Nevertheless, this design is still popular in North America among medium- and light-duty trucks. To reach the engine, the whole cab tilts forward, earning this design the name of "tilt-cab". This type of cab is especially suited to the delivery conditions in Europe where many roads require the short turning radius afforded by the shorter wheelbase of the cab over engine layout. * "Conventional" cabs seated the driver behind the engine, as in most passenger cars or pickup trucks. Many new cabs are very
streamlined Streamlines, streaklines and pathlines are field lines in a fluid flow. They differ only when the flow changes with time, that is, when the flow is not steady. Considering a velocity vector field in three-dimensional space in the framework of ...
, with a sloped hood (bonnet) and other features to lower drag. Conventional cabs are the most common in North America, Australia, and China, and are known in the UK as "American cabs" and in the Netherlands as "torpedo cabs". * "Cab beside engine" designs are used for
terminal tractor A terminal tractor, known in the United States as a shunt truck, spotter truck, spotting tractor, yard truck, yard shifter, yard dog, yard goat, yard horse, yard jockey, hostler, or mule, is a kind of semi-tractor intended to move semi-trailers ...
s at shipping yards and for other specialist vehicles carrying long loads such as pipes. This type is often made by replacing the passenger side of a cab-over truck with an extended section of the load bed. A further step from this is the side loading
forklift A forklift (also called lift truck, jitney, hi-lo, fork truck, fork hoist, and forklift truck) is a powered industrial truck used to lift and move materials over short distances. The forklift was developed in the early 20th century by various c ...
that can be described as a specially fabricated vehicle with the same properties as a truck of this type, in addition to the ability to pick up its own load.


Engines and motors

Most small trucks such as
sport utility vehicle A sport utility vehicle (SUV) is a car classification that combines elements of road-going passenger cars with features from off-road vehicles, such as raised ground clearance and four-wheel drive. There is no commonly agreed-upon definitio ...
s (SUVs), vans or pickups, and even light medium-duty trucks in North America, China, and Russia use
gasoline engine A petrol engine (gasoline engine in American English) is an internal combustion engine designed to run on petrol (gasoline). Petrol engines can often be adapted to also run on fuels such as liquefied petroleum gas and ethanol blends (such as ''E ...
s (petrol engines), but many
diesel engine The diesel engine, named after Rudolf Diesel, is an internal combustion engine in which ignition of the fuel is caused by the elevated temperature of the air in the cylinder due to mechanical compression; thus, the diesel engine is a so-call ...
d models are now being produced. Most of the heavier trucks use
four-stroke A four-stroke (also four-cycle) engine is an internal combustion (IC) engine in which the piston completes four separate strokes while turning the crankshaft. A stroke refers to the full travel of the piston along the cylinder, in either directio ...
diesel engines with a
turbocharger In an internal combustion engine, a turbocharger (often called a turbo) is a forced induction device that is powered by the flow of exhaust gases. It uses this energy to compress the intake gas, forcing more air into the engine in order to pro ...
and
intercooler An intercooler is a heat exchanger used to cool a gas after compression. Often found in turbocharged engines, intercoolers are also used in air compressors, air conditioners, refrigeration and gas turbines. Internal combustion engines Mo ...
. Huge off-highway trucks use locomotive-type engines such as a
V12 V12 or V-12 may refer to: Aircraft * Mil V-12, a Soviet heavy lift helicopter * Pilatus OV-12, a planned American military utility aircraft * Rockwell XFV-12, an American experimental aircraft project * Škoda-Kauba V12, a Czechoslovak experim ...
Detroit Diesel Detroit Diesel Corporation (DDC) is an American diesel engine manufacturer headquartered in Detroit, Michigan, United States. It is a subsidiary of Daimler Truck North America, which is itself a wholly owned subsidiary of the mulitinational Da ...
two stroke A two-stroke (or two-stroke cycle) engine is a type of internal combustion engine that completes a power cycle with two strokes (up and down movements) of the piston during one power cycle, this power cycle being completed in one revolution of t ...
engine. A large proportion of refuse trucks in the United States employ
CNG Compressed natural gas (CNG) is a fuel gas mainly composed of methane (CH4), compressed to less than 1% of the volume it occupies at standard atmospheric pressure. It is stored and distributed in hard containers at a pressure of , usually in cy ...
(compressed natural gas) engines for their low fuel cost and reduced carbon emissions. A significant proportion of North American manufactured trucks use an engine built by the last remaining major independent engine manufacturer (
Cummins Cummins Inc. is an American multinational corporation that designs, manufactures, and distributes engines, filtration, and power generation products. Cummins also services engines and related equipment, including fuel systems, controls, air ...
) but most global OEMs such as
Volvo Trucks Volvo Trucks ( sv, Volvo Lastvagnar) is a truck manufacturing division of Volvo based in Gothenburg, Sweden. Volvo Trucks was a separate company within Volvo. The Volvo Group was reorganised on 1 January 2012 and as a part of the process, Vol ...
and
Daimler AG The Mercedes-Benz Group AG (previously named Daimler-Benz, DaimlerChrysler and Daimler) is a German multinational automotive corporation headquartered in Stuttgart, Baden-Württemberg, Germany. It is one of the world's leading car manufacture ...
promote their own "captive" engines. In the European Union, all new truck engines must comply with Euro VI emission regulations. several alternative technologies are competing to displace the use of diesel engines in heavy trucks. CNG engines are widely used in the US refuse industry and in concrete mixers, among other short-range vocations, but range limitations have prevented their broader uptake in freight hauling applications. Heavy
electric truck An electric truck is an electric vehicle Electric-vehicle battery, powered by batteries designed to transport cargo, carry specialized payloads, or perform other utilitarian work. Electric trucks have serviced niche applications like milk flo ...
s and hydrogen-powered trucks are new to the market in 2021, but major freight haulers are interested. Although cars will be first the
phase-out of fossil fuel vehicles Phase-out of fossil fuel vehicles means stopping selling and using vehicles which are powered by fossil fuels, such as gasoline (petrol), diesel, kerosene and fuel oil: it is one of the three most important parts of the general fossil fuel phase ...
includes trucks. According to
The Economist ''The Economist'' is a British weekly newspaper printed in demitab format and published digitally. It focuses on current affairs, international business, politics, technology, and culture. Based in London, the newspaper is owned by The Econo ...
magazine "Electric lorries will probably run on hydrogen, not batteries, which are too expensive." Other researchers say that once faster
chargers The Los Angeles Chargers are a professional American football team based in the Los Angeles metropolitan area. The Chargers compete in the National Football League (NFL) as a member of the American Football Conference (AFC) West division, and ...
are available batteries will become competitive against diesel for all, except perhaps the heaviest, trucks.


Drivetrain

Small trucks use the same type of transmissions as almost all cars, having either an automatic transmission or a manual transmission with
synchromesh A manual transmission (MT), also known as manual gearbox, standard transmission (in Canada, the United Kingdom, and the United States), or stick shift (in the United States), is a multi-speed motor vehicle transmission system, where gear changes ...
(synchronizers). Bigger trucks often use manual transmissions without synchronizers, saving bulk and weight, although synchromesh transmissions are used in larger trucks as well. Transmissions without synchronizers, known as "crash boxes", require double-clutching for each shift, (which can lead to repetitive motion injuries), or a technique known colloquially as "floating", a method of changing gears which doesn't use the clutch, except for starts and stops, due to the physical effort of double-clutching, especially with non-power-assisted clutches, faster shifts, and less clutch wear. Double-clutching allows the driver to control the engine and transmission revolutions to synchronize so that a smooth shift can be made; for example, when upshifting, the accelerator pedal is released and the clutch pedal is depressed while the gear lever is moved into neutral, the clutch pedal is then released and quickly pushed down again while the gear lever is moved to the next higher gear. Finally, the clutch pedal is released and the accelerator pedal pushed down to obtain the required engine speed. Although this is a relatively fast movement, perhaps a second or so while the transmission is in neutral, it allows the engine speed to drop and synchronize engine and transmission revolutions relative to the road speed. Downshifting is performed in a similar fashion, except the engine speed is now required to increase (while the transmission is in neutral) just the right amount in order to achieve the synchronization for a smooth, non-collision gear change. "Skip changing" is also widely used; in principle, the operation is the same as double-clutching, but it requires neutral be held slightly longer than a single-gear change. Common North American setups include 9, 10, 13, 15, and 18 speeds. Automatic and
automated manual transmission The automated manual transmission (AMT) is a type of transmission for motor vehicles. It is essentially a conventional manual transmission but uses automatic actuation to operate the clutch and/or shift between gears. Many early versions of t ...
s for heavy trucks are becoming more and more common, due to advances both in transmission and engine power. In Europe, 8, 10, 12, and 16 gears are common on larger trucks with a manual transmission, while conventional automatic or automated manual transmissions would have anything from 5 to 12 gears. Almost all heavy truck transmissions are of the "range and split" (double H shift pattern) type, where range change and so‑called half gears or splits are air operated and always preselected before the main gear selection.


Frame

A truck
frame A frame is often a structural system that supports other components of a physical construction and/or steel frame that limits the construction's extent. Frame and FRAME may also refer to: Physical objects In building construction *Framing (con ...
consists of two parallel boxed (tubular) or C‑shaped rails, or beams, held together by
crossmember A crossmember is a structural section that is transverse to the main structure. In the automotive industry, the term typically refers to a component, usually of steel, usually boxed, that is bolted across the underside of a monocoque / unibody ...
s. These frames are referred to as
ladder frame A vehicle frame, also historically known as its ''chassis'', is the main supporting structure of a motor vehicle to which all other components are attached, comparable to the skeleton of an organism. Until the 1930s, virtually every car had a ...
s due to their resemblance to a ladder if tipped on end. The rails consist of a tall vertical section (two if boxed) and two shorter horizontal flanges. The height of the vertical section provides opposition to vertical flex when weight is applied to the top of the frame (beam resistance). Though typically flat the whole length on heavy-duty trucks, the rails may sometimes be tapered or arched for clearance around the engine or over the axles. The holes in rails are used either for mounting vehicle components and running wires and hoses or measuring and adjusting the orientation of the rails at the factory or repair shop. The frame is usually made of
steel Steel is an alloy made up of iron with added carbon to improve its strength and fracture resistance compared to other forms of iron. Many other elements may be present or added. Stainless steels that are corrosion- and oxidation-resistant ty ...
, but can be made (whole or in part) of
aluminum Aluminium (aluminum in American and Canadian English) is a chemical element with the symbol Al and atomic number 13. Aluminium has a density lower than those of other common metals, at approximately one third that of steel. It has ...
for a lighter weight. A
tow bar A tow hitch (or tow bar or trailer hitch in North America) is a device attached to the chassis of a vehicle for towing, or a towbar to an aircraft nose gear. It can take the form of a tow ball to allow swiveling and articulation of a trailer, ...
may be found attached at one or both ends, but heavy tractors almost always make use of a
fifth wheel The fifth-wheel coupling provides the link between a semi-trailer and the towing truck, tractor unit, leading trailer or dolly. The coupling consists of a kingpin, a vertical steel pin protruding from the bottom of the front of the semi-tr ...
hitch.


Body types

Box truck A box truck—also known as a box van, cube van, bob truck or cube truck—is a chassis cab truck with an enclosed cuboid-shaped cargo area. On most box trucks, the cabin is separate to the cargo area; however some box trucks have a door betwee ...
s ("tilts" in the UK) have walls and a roof, making an enclosed load space. The rear has doors for unloading; a side door is sometimes fitted.
Chassis cab A chassis cab, also called a cab chassis or half truck, is a type of vehicle construction, often found in medium duty truck commercial vehicles. Instead of supplying the customer with a factory pre-assembled flatbed, cargo container, or other eq ...
trucks have a fully-enclosed cab at the front, with bare
chassis A chassis (, ; plural ''chassis'' from French châssis ) is the load-bearing framework of an artificial object, which structurally supports the object in its construction and function. An example of a chassis is a vehicle frame, the underpart ...
frame-rails behind, suitable for subsequent permanent attachment of a specialized payload, like a fire-truck or
ambulance An ambulance is a medically equipped vehicle which transports patients to treatment facilities, such as hospitals. Typically, out-of-hospital medical care is provided to the patient during the transport. Ambulances are used to respond to medi ...
body.
Concrete mixer A concrete mixer (often colloquially called a cement mixer) is a device that homogeneously combines cement, aggregate such as sand or gravel, and water to form concrete. A typical concrete mixer uses a revolving drum to mix the components. F ...
s have a rotating drum on an inclined axis, rotating in one direction to mix, and in the other to discharge the concrete down chutes. Because of the weight and power requirements of the drum body and rough construction sites, mixers have to be very heavy duty.
Dump truck A dump truck, known also as a dumping truck, dump trailer, dumper trailer, dump lorry or dumper lorry or a dumper for short, is used for transporting materials (such as dirt, gravel, or demolition waste) for construction as well as coal. A typi ...
s ("tippers" in the UK) transport loose material such as sand, gravel, or dirt for construction. A typical dump truck has an open-box bed, which is hinged at the rear and lifts at the front, allowing the material in the bed to be unloaded ("dumped") on the ground behind the truck.
Flatbed truck A flatbed truck (or flatbed lorry in British English) is a type of truck which can be either articulated or rigid. As the name suggests, its bodywork is just an entirely flat, level 'bed' with no sides or roof. This allows for quick and easy load ...
s have an entirely flat, level platform body. This allows for quick and easy loading but has no protection for the load. Hanging or removable sides are sometimes fitted.
Refrigerator truck A refrigerator truck or chiller lorry (also called a Reefer), is a van or truck designed to carry perishable freight at low temperatures. Most long-distance refrigerated transport by truck is done in articulated trucks pulling refrigerated semi- ...
s have insulated panels as walls and a roof and floor, used for transporting fresh and frozen cargo such as ice cream, food, vegetables, and prescription drugs. They are mostly equipped with double-wing rear doors, but a side door is sometimes fitted. Refuse trucks have a specialized body for collecting and, often, compacting trash collected from municipal, commercial, and industrial sites. This application has the widest use of the
cab-over Cab-over, also known as cab over engine (COE), cab forward (U.S.), flat nose (Canada), or forward control (UK), is a body style of truck, bus, or van that has a vertical front, "flat face" or a hood (vehicle), semi-hood, with the Cabin (truck), ...
configuration in North America, to provide better maneuverability in tight situations. They are also among the most severe-duty and highest
GVWR Vehicle weight is a measurement of wheeled motor vehicles; either an actual measured weight of the vehicle under defined conditions or a gross weight rating for its weight carrying capacity. Curb or kerb weight Curb weight (U.S. English) or kerb ...
trucks on public roads. Semi-tractors ("artics" in the UK) have a fifth wheel for towing a semi-trailer instead of a body.
Tank truck A tank truck, gas truck, fuel truck, or tanker truck (American English) or tanker (British English) is a motor vehicle designed to carry liquids or gases on roads. The largest such vehicles are similar to railroad tank cars, which are also design ...
s ("tankers" in the UK) are designed to carry
liquids A liquid is a nearly incompressible fluid that conforms to the shape of its container but retains a (nearly) constant volume independent of pressure. As such, it is one of the four fundamental states of matter (the others being solid, gas, an ...
or
gas Gas is one of the four fundamental states of matter (the others being solid, liquid, and plasma). A pure gas may be made up of individual atoms (e.g. a noble gas like neon), elemental molecules made from one type of atom (e.g. oxygen), or ...
es. They usually have a cylindrical tank lying horizontally on the chassis. Many variants exist due to the wide variety of liquids and gases that can be transported. Wreckers ("recovery lorries" in the UK) are used to recover and/or tow disabled vehicles. They are normally equipped with a boom with a cable; wheel/chassis lifts are becoming common on newer trucks.


Sales and sales issues


Manufacturers


Truck market worldwide


Driving

In many countries, driving a truck requires a special driving license. The requirements and limitations vary with each different jurisdiction.


Australia

In Australia, a
truck driver A truck driver (commonly referred to as a trucker, teamster, or driver in the United States and Canada; a truckie in Australia and New Zealand; a HGV driver in the United Kingdom, Ireland and the European Union, a lorry driver, or driver in ...
's license is required for any motor vehicle with a
Gross Vehicle Mass Vehicle weight is a measurement of wheeled motor vehicles; either an actual measured weight of the vehicle under defined conditions or a gross weight rating for its weight carrying capacity. Curb or kerb weight Curb weight (U.S. English) or kerb ...
(GVM) exceeding . The motor vehicles classes are further expanded as: ;Combination * HC: Heavy Combination, a typical prime mover plus semi-trailer combination. * MC: Multi Combination, e.g., B Doubles/road trains ; Rigid * LR: Light rigid: a rigid vehicle with a GVM of more than but not more than . Any towed trailer must not weigh more than GVM. * MR: Medium rigid: a rigid vehicle with 2 axles and a GVM of more than . Any towed trailer must not weigh more than GVM. Also includes vehicles in class ''LR''. * HR: Heavy Rigid: a rigid vehicle with three or more axles and a GVM of more than . Any towed trailer must not weigh more than GVM. Also includes articulated buses and vehicles in class ''MR''. ;Heavy vehicle transmission There is also a heavy vehicle transmission condition for a license class ''HC'', ''HR'', or ''MC'' test passed in a vehicle fitted with an automatic or synchromesh transmission; a driver's license will be restricted to vehicles of that class fitted with a synchromesh or automatic transmission. To have the condition removed, a person needs to pass a practical driving test in a vehicle with non-synchromesh transmission (constant mesh or crash box).


Europe

Driving licensing has been harmonized throughout the
European Union The European Union (EU) is a supranational political and economic union of member states that are located primarily in Europe. The union has a total area of and an estimated total population of about 447million. The EU has often been des ...
and the EEA (and practically all European non-member states), so that common rules apply within Europe (see
European driving licence The European driving licence is a driving licence issued by the member states of the European Economic Area (EEA); all 27 EU member states and three EFTA member states; Iceland, Liechtenstein and Norway, which give shared features the various ...
). As an overview, to drive a vehicle weighing more than for commercial purposes requires a specialist license (the type varies depending on the use of the vehicle and number of seats). For licenses first acquired after 1997, that weight was reduced to , not including trailers. Since 2013, the C1 license category allows driving vehicles over 3.5 and up to 7.5 tonnes. The C license category allows driving vehicles over 3.5 tonnes with a trailer up to 750 kg, and the CE category allows driving category C vehicles with a trailer over 750 kg.


South Africa

To drive any vehicle with a GVM exceeding , a code C1 drivers license is required. Furthermore, if the vehicle exceeds a code C license becomes necessary. To drive any vehicle in South Africa towing a trailer with a GVM more than , further restrictions apply and the driver must possess a license suitable for the GVM of the total combination as well as an articulated endorsement. This is indicated with the letter "E" prefixing the license code. In addition, any vehicle designed to carry goods or passengers may only be driven by a driver possessing a Public Driver's Permit, (or PrDP) of the applicable type. This is an additional license that is added to the DL card of the operator and subject to annual renewal unlike the five-year renewal period of a normal license. The requirements for obtaining the different classes are below. * "G": Required for the transport of general goods, requires a criminal record check and a fee on issuing and renewal. * "P": Required for the transport of paying passengers, requires a more stringent criminal record check, additionally the driver must be over the age of 21 at time of issue. A G class PrDP will be issued at the same time. * "D": Required for the transport of dangerous materials, requires all of the same checks as class P., and in addition the driver must be over 25 at time of issue.


United States

In the United States, a
commercial driver's license A commercial driver's license (CDL) is a driver's license required in the United States to operate large and heavy vehicles (including trucks, buses, and trailers) or a vehicle of any size that transports hazardous materials or more than 15 p ...
is required to drive any type of commercial vehicle weighing or more. The federal government regulates how many hours a driver may be on the clock, how much rest and sleep time is required (e.g., 11 hours driving/14 hours on-duty followed by 10 hours off, with a maximum of 70 hours/8 days or 60 hours/7 days, 34 hours restart ) Violations are often subject to significant penalties. Instruments to track each driver's hours must sometimes be fitted. In 2006, the US trucking industry employed 1.8 million drivers of heavy trucks. There is a shortage of willing trained long-distance truck drivers. Part of the reason for this is the economic fallout from
deregulation Deregulation is the process of removing or reducing state regulations, typically in the economic sphere. It is the repeal of governmental regulation of the economy. It became common in advanced industrial economies in the 1970s and 1980s, as a ...
of the trucking industry.
Michael H. Belzer Michael H. Belzer is an internationally recognized expert on the trucking industry, especially the institutional and economic impact of deregulation. He is a professor in the economics department at Wayne State University. He is the author of ''Sw ...
,
associate professor Associate professor is an academic title with two principal meanings: in the North American system and that of the ''Commonwealth system''. Overview In the ''North American system'', used in the United States and many other countries, it is a ...
, in the economics department at
Wayne State University Wayne State University (WSU) is a public research university in Detroit, Michigan. It is Michigan's third-largest university. Founded in 1868, Wayne State consists of 13 schools and colleges offering approximately 350 programs to nearly 25,000 ...
and co-author of ''Sweatshops on Wheels: Winners and Losers in Trucking Deregulation'', argues that low pay, bad working conditions and unsafe conditions have been a direct result of deregulation. The book cites poor working conditions and an unfair pay system as responsible for high annual employee turnover in the industry."Sweatshops on Wheels," '' U.S. News & World Report''."Sweatshops on Wheels." ''
The Washington Post ''The Washington Post'' (also known as the ''Post'' and, informally, ''WaPo'') is an American daily newspaper published in Washington, D.C. It is the most widely circulated newspaper within the Washington metropolitan area and has a large nati ...
''
In 2018, in the US, 5,096 large trucks and buses were involved in fatal crashes: * The number of large trucks involved in fatal crashes is 4,862, * The number of large trucks involved in injury crashes is 112,000, * The number of large trucks involved in property damage only crashes is 414,000.


Environmental effects

Like cars, trucks contribute to air, noise, and
water pollution Water pollution (or aquatic pollution) is the contamination of water bodies, usually as a result of human activities, so that it negatively affects its uses. Water bodies include lakes, rivers, oceans, aquifers, reservoirs and groundwater. Water ...
. Unlike cars, , most trucks run on diesel, and
diesel exhaust Diesel exhaust is the gaseous exhaust produced by a diesel type of internal combustion engine, plus any contained particulates. Its composition may vary with the fuel type or rate of consumption, or speed of engine operation (e.g., idling or at ...
is especially dangerous for health. Some countries have different vehicle emission standards for trucks and cars.
NOx In atmospheric chemistry, is shorthand for nitric oxide () and nitrogen dioxide (), the nitrogen oxides that are most relevant for air pollution. These gases contribute to the formation of smog and acid rain, as well as affecting tropos ...
and
particulates Particulates – also known as atmospheric aerosol particles, atmospheric particulate matter, particulate matter (PM) or suspended particulate matter (SPM) – are microscopic particles of solid or liquid matter suspended in the air. The ter ...
emitted by trucks are very dangerous to health, causing thousands of early deaths annually in the US alone. As older trucks are usually the worst, many cities have banned 20th century trucks. Air pollution also threatens professional truck drivers. Over a quarter of global transport emissions are from road freight, in 2021 over 1700 million tonnes from medium and heavy trucks, so many countries are further restricting truck emissions to help limit climate change. Many environmental organizations favor laws and incentives to encourage the switch from road to rail, especially in Europe. Several countries have pledged that 30% of sales of trucks and buses will be zero emission by 2030. With respect to
noise pollution Noise pollution, also known as environmental noise or sound pollution, is the propagation of noise with ranging impacts on the activity of human or animal life, most of them are harmful to a degree. The source of outdoor noise worldwide is main ...
, trucks emit considerably higher sound levels at all speeds compared to typical cars; this contrast is particularly strong with heavy-duty trucks. There are several aspects of truck operations that contribute to the overall sound that is emitted. Continuous sounds are those from
tire A tire (American English) or tyre (British English) is a ring-shaped component that surrounds a Rim (wheel), wheel's rim to transfer a vehicle's load from the axle through the wheel to the ground and to provide Traction (engineering), t ...
s rolling on the roadway and the constant hum of their diesel engines at highway speeds. Less frequent noises, but perhaps more noticeable, are things like the repeated sharp-pitched whistle of a
turbocharger In an internal combustion engine, a turbocharger (often called a turbo) is a forced induction device that is powered by the flow of exhaust gases. It uses this energy to compress the intake gas, forcing more air into the engine in order to pro ...
on acceleration, or the abrupt blare of an
exhaust brake An exhaust brake is a means of slowing a diesel engine by closing off the exhaust path from the engine, causing the exhaust gases to be compressed in the exhaust manifold, and in the cylinder. Since the exhaust is being compressed, and there is no ...
retarder when traversing a downgrade. There has been
noise regulation Noise regulation includes statutes or guidelines relating to sound transmission established by national, state or provincial and municipal levels of government. After the watershed passage of the United States Noise Control Act of 1972,U.S. Noise ...
put in place to help control where and when the use of
engine braking Engine braking occurs when the retarding forces within an engine are used to slow down a motor vehicle, as opposed to using additional external braking mechanisms such as friction brakes or magnetic brakes. The term is often confused with sever ...
retarders are allowed.


Operator health and safety

A truck cab is a hazard control that protects the truck operator from hazardous airborne pollutants. As an enclosure, it is an example of an engineering control. Enclosed operator cabs have been used on agriculture, mining, and construction vehicles for several decades. Most modern-day enclosed cabs have
heating, ventilation, and air conditioning Heating, ventilation, and air conditioning (HVAC) is the use of various technologies to control the temperature, humidity, and purity of the air in an enclosed space. Its goal is to provide thermal comfort and acceptable indoor air quality. HV ...
(HVAC) systems for primarily maintaining a comfortable temperature and providing breathable air for their occupants. Various levels of filtration can be incorporated into the HVAC system to remove airborne pollutants such as
dust Dust is made of fine particles of solid matter. On Earth, it generally consists of particles in the atmosphere that come from various sources such as soil lifted by wind (an aeolian process), volcanic eruptions, and pollution. Dust in homes ...
s, diesel particulate matter (DPM), and other
aerosol An aerosol is a suspension (chemistry), suspension of fine solid particles or liquid Drop (liquid), droplets in air or another gas. Aerosols can be natural or Human impact on the environment, anthropogenic. Examples of natural aerosols are fog o ...
s. Two key elements of an effective environmental enclosure are a good filtration system and an enclosure with good integrity (sealed isolation from the outside environment). It is recommended that a filtration system filter out at least 95% or greater of airborne respirable aerosols from the intake airflow, with an additional recirculation filtering component for the inside air. Good enclosure integrity is also needed to achieve
positive pressure Positive pressure is a pressure within a system that is greater than the environment that surrounds that system. Consequently, if there is any leak from the positively pressured system it will egress into the surrounding environment. This is in ...
to prevent wind-driven aerosol penetration into the enclosure'','' as well as to minimize air leakage around the filtration system. Test methods and mathematical modeling of environmental enclosures are also beneficial for quantifying and optimizing filtration system designs, as well as maintaining optimum protection factor performance for enclosure occupants.


Operations issues


Taxes

Commercial trucks in the US pay higher road use taxes on a state level than other road vehicles and are subject to extensive regulation. A few reasons commercial trucks pay higher road use taxes: they are bigger and heavier than most other vehicles, and cause more wear and tear per hour on roadways; and trucks and their drivers are on the road for more hours per day. Rules on use taxes differ among jurisdictions.


Damage to pavement

The life of a pavement is measured by the number of passes of a vehicle axle. It may be evaluated using the Load Equivalency Factor, which states that the damage by the pass of a vehicle axle is proportional to the 4th power of the weight, so a ten-ton axle consumes 10,000 times the life of the pavement as a one-ton axle. For that reason, loaded trucks cost the same as thousands of cars in pavement costs, and are subject to higher taxes and highway tolls.


Commercial insurance

Primary liability insurance coverage protects the truck from damage or injuries to other people as a result of a truck accident. This truck insurance coverage is mandated by U.S. state and federal agencies, and proof of coverage is required to be sent to them. Interstate trucks in the U.S. are required to have a minimum of $75,000 in liability insurance. This includes motor carriers operating vehicles with a gross weight rating in excess of (which transport non-hazardous materials). All motor carriers operating vehicles transporting materials classified as hazardous, and which have a gross weight rating in excess of must have a minimum of $1,000,000 in liability insurance. All motor carriers operating vehicles such as hopper-type cargo vehicles or tankers with a capacity in excess of must have a minimum of $5,000,000 in liability insurance. Pricing is dependent on region, driving records, and history of the trucking operation. Motor truck cargo insurance protects the transporter for his responsibility in the event of damaged or lost freight. The policy is purchased with a maximum load limit per vehicle. Cargo insurance coverage limits can range from $10,000 to $100,000 or more. Pricing for this insurance is mainly dependent on the type of cargo being hauled.


Safety


Trucking accidents

In 2002 and 2004, there were over 5,000 fatalities related to trucking accidents in the United States. The trucking industry has since made significant efforts in increasing safety regulations. In 2008, the industry had successfully lowered the fatality rate to just over 4,000 deaths, but trucking accidents are still an issue that causes thousands of deaths and injuries each year. Approximately 6,000 trucking accident fatalities occur annually in the United States. Fatalities are not the only issue caused by trucking accidents. Here are some of the environmental issues that arise with trucking accidents: * 14.4% of trucking accidents cause cargo to spill * 6.5% cause open flames Following increased pressure from ''The Times'' "Cities Fit For Cycling" campaign and from other media in Spring 2012, warning signs are now displayed on the backs of many heavy goods vehicles (HGV). These signs are directed against a common type of accident that occurs when the large vehicle turns left at a junction: a cyclist trying to pass on the nearside can be crushed against the HGV's wheels, especially if the driver cannot see the
cyclist Cycling, also, when on a two-wheeled bicycle, called bicycling or biking, is the use of cycles for transport, recreation, exercise or sport. People engaged in cycling are referred to as "cyclists", "bicyclists", or "bikers". Apart from two ...
. The signs, such as the winning design of th
InTANDEM road safety competition
launched in March 2012, advocate extra care when passing a large vehicle on the nearside.


HGV safety in the EU

In-vehicle speed limitation is required applying a 90 km/h limit to commercial vehicles over 3.5 tonnes. Front, side, and rear underrun protection is required on commercial vehicles over 3.5 tonnes. Trucks must be fitted with blind-spot mirrors that give drivers a wider field of vision than conventional mirrors.


See also

* Air brake *
Animal transporter Animal transporters are used to transport livestock or non-livestock animals over long distances. They could be specially-modified vehicles, trailers, ships or aircraft containers. While some animal transporters like horse trailers only carry ...
*
Articulated hauler An articulated hauler, articulated dump truck (ADT), or sometimes a dump hauler, is a very large heavy-duty type of dump truck used to transport loads over rough terrain, and occasionally on public roads. The vehicle usually has all-wheel drive and ...
*
Autonomous truck A self-driving truck, also known as an autonomous truck, or robo-truck is an application of self-driving car designed to transport cargo without requiring no human driver. Many companies are testing self-driving semi trucks. In September 2022, ' ...
*
Ballast tractor A ballast tractor is a specially weighted tractor unit of a heavy hauler combination. It is designed to utilize a drawbar to pull or push heavy or exceptionally large trailer loads which are loaded in a hydraulic modular trailer. When feasible ...
*
Campervan A camper van, also referred to as a camper, caravanette, motor caravan or RV (recreational vehicle) in North America, is a self-propelled vehicle that provides both transport and sleeping accommodation. The term describes vans that have been fitt ...
*
Cutaway van chassis Cutaway van chassis are used by second stage manufacturers for a wide range of completed motor vehicles. Especially popular in the United States, they are usually based upon incomplete vans to be bigger or smaller than pickup trucks and SUVs mad ...
*
Dekotora , an abbreviation for "decoration truck", are a style of decorated trucks in Japan. Commonly featuring neon, LED or ultraviolet lights, detailed paintjobs and murals, and stainless steel or golden parts (both on the exterior and the interior ...
, Japanese decorated trucks *
Food truck A food truck is a large motorized vehicle (such as a van) or trailer, equipped to cook, prepare, serve, and/or sell food. Some, including ice cream trucks, sell frozen or prepackaged food; others have on-board kitchens and prepare food from scratc ...
*
Glossary of the American trucking industry A specialized set of jargon describe the tools, equipment, and employment sectors used in the trucking industry in the United States. Some terms may be used within other English-speaking countries, or within the freight industry in general ( ...
*
Great West Truck Show The Great West Truck Show (GWTS) is a heavy and medium duty truck show held each June in Paradise, Nevada, USA. GWTS is produced by the Randall-Reilly Events Group, a division of Randall-Reilly Publishing. GWTS 2008 The 2008 Great West Truck S ...
*
Hand truck :''"Hand truck" may also refer to Pallet jack.'' A hand truck, also known as a hand trolley, dolly, stack truck, trundler, box cart, sack barrow, cart, sack truck, two wheeler, or bag barrow, is an L-shaped box-moving handcart with handles at one ...
*
Kei truck A kei truck, kei-class truck, or Japanese mini truck is a mini truck, a tiny but practical pickup truck available in rear-wheel drive or four-wheel drive versions, built to satisfy the Japanese '' keijidōsha'' (軽自動車, "light vehicle") st ...
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Haul truck Haul trucks are off-highway, rigid dump trucks specifically engineered for use in high-production mining and heavy-duty construction environments. Haul trucks are also used for transporting construction equipment from job site to job site. Some ar ...
* Large goods vehicle *
List of military trucks This list includes military trucks, are in production for 2021. Previous models are in a separate table, which is below. In the column "Company" indicates the manufacturer of the truck, in the column "truck" model name is indicated, in the colum ...
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List of pickup trucks This is an incomplete list of pickup trucks that are currently in production (as of April 2021). This list also includes off-roader, sport, luxury, and hybrid trucks, both discontinued and still in production. Also, some vehicles are sold under d ...
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List of trucks This is an incomplete list of trucks currently in production and discontinued trucks (as of 2014). This list doesn't include pickup trucks, nor trucks used only in militaries. Some images provided below may show the outdated model. __TOC__ Curre ...
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Logging truck A logging truck or timber lorry is a large truck used to carry logs. Some have integrated flatbeds, some are discrete tractor units, and some are configured to spread a load between the tractor unit and a dollied trailer pulled behind it. Ofte ...
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Multi-stop truck Multi-stop trucks (also known as walk-in delivery or step vans) are a type of light-duty and medium-duty truck created for local deliveries to residences and businesses. They are designed to be driven either sitting down or standing up, and oft ...
* Roll-off truck *
Tail lift A tail lift (term used in the UK, also called a "liftgate" in North America) is a mechanical device permanently installed on the rear of a work truck, van, or lorry, and is designed to facilitate the handling of goods from ground level or a load ...
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Traffic congestion Traffic congestion is a condition in transport that is characterized by slower speeds, longer trip times, and increased vehicular queueing. Traffic congestion on urban road networks has increased substantially since the 1950s. When traffic de ...
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Truck art in South Asia Truck art in South Asia is a popular form of regional decoration, with trucks featuring elaborate floral patterns and calligraphy. It is especially common in Pakistan and India. During the War in Afghanistan, Pakistani decorated trucks that ran ...
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Truck classification Truck classifications are typically based upon the maximum loaded weight of the truck, typically using the gross vehicle weight rating (GVWR) and sometimes also the gross trailer weight rating (GTWR), and can vary among jurisdictions. United ...
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Truck hijacking Carjacking is a robbery in which the item taken over is a motor vehicle.Michael Cherbonneau, "Carjacking," in ''Encyclopedia of Social Problems'', Vol. 1 (SAGE, 2008: ed. Vincent N. Parrillo), pp. 110-11. In contrast to car theft, carjacking is ...
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Truck scale A truck scale (US), weighbridge (non-US) or railroad scale is a large set of scales, usually mounted permanently on a concrete foundation, that is used to weigh entire rail or road vehicles and their contents. By weighing the vehicle both emp ...
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Truck stop A truck stop, known as a service station in the United Kingdom, and a travel center by major chains in the United States, is a commercial facility which provides refueling, rest (parking), and often ready-made food and other services to motori ...


References


External links

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Federal Motor Carrier Safety Administration

Different sizes and classes of trucks in the UK
* {{Authority control Carriages and mountings Vehicles introduced in 1895