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, carry specialized payloads, or perform other utilitarian work. Trucks vary greatly in size, power, and configuration, but the vast majority feature
body-on-frame 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 wheels. Most definitions of ''cars'' say that they run primarily on roads, seat one to eight people, have four wheels, and mainly transport people instead of goods.
The year 1886 is regarded ...
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 trucks,
fire trucks,
concrete mixers, and
suction excavator
A suction excavator or vacuum excavator is a construction vehicle that removes materials from a hole on land, or removes heavy debris on land.
Description
Suction excavation is a new solution to traditional excavation problems. Suction excavati ...
s. 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".
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-ca ...
s, although small- to medium-size trucks with
gasoline engines 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 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 built in 1769. However,
steam wagons 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 appeared in 1881, towed by a
steam tractor manufactured by
De Dion-Bouton. 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 List of wars and anthropogenic disasters by death toll, one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, ...
, 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 designed and built the first
internal combustion 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, the
Daimler Motor Lastwagen. Other companies, such as
Peugeot,
Renault and
Büssing, 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
The engine configuration describes the fundamental operating principles by which internal combustion engines are categorized.
Piston engines are often categorized by their cylinder layout, valves and camshafts. Wankel engines are often categorize ...
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-ca ...
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 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
Chemistry is the science, scientific study of the properties and behavior of matter. It is a natural science that covers the Chemical element, elements that make up matter to the chemical compound, compounds made of atoms, molecules and ions ...
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 varieties of the English language native to the United States. English is the most widely spoken language in the United States and in most circumstances ...
, 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 tota ...
,
Australia,
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 List of islands of New Zealand, smaller islands. It is the ...
,
Pakistan 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 count ...
, 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,
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 ...
.
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 industry, where the word is known to have been used in 1838 to refer to a type of truck (a
goods wagon as in British usage, not a
bogie 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 g ...
: "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 Delta i ...
''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 cars, 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
ZAP was an American electric vehicle company that designed, produced and marketed vehicles including automobiles, motorcycles, bicycles, scooters, personal watercraft, hovercraft, ATVs, neighborhood electric vehicles and commercial vehicles. ...
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 bodies. Specialized designs with substantial frames such as the Italian Piaggio shown here are based upon Japanese designs (in this case by
Daihatsu) 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
*
Honda Acty
*
Tata Ace
*
Mazda Scrum
*
Mitsubishi Minicab
*
Subaru Sambar
*
Suzuki Carry
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 publi ...
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 trucks,
garbage trucks 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 units.
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 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 trains 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,
combination, and
axle weight on state and local roads.
Uniquely, the
State of Michigan 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
cab, an area for placing
cargo or equipment,
axles,
suspension and
roadwheels, an
engine and a
drivetrain.
Pneumatic
Pneumatics (from Greek ‘wind, breath’) is a branch of engineering that makes use of gas or pressurized air.
Pneumatic systems used in industry are commonly powered by compressed air or compressed inert gases. A centrally located and elec ...
,
hydraulic,
water, and
electrical systems may also be present. Many also tow one or more
trailers or semi-trailers.
Cab
The "cab", or "cabin" is an enclosed space where the driver is seated. A "
sleeper
A sleeper is a person who is sleeping.
Sleeper may also refer to:
Arts and entertainment Characters
* Sleeper (Marvel Comics), a Nazi German robot utilized by the Red Skull in Marvel Comics
* The Sleeper (Wild Cards), a character in the Wild Ca ...
" 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 engine" (COE) or "flat nose"; where the driver is seated above the front axle and the
engine. 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, 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 tractors 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 vehicles (SUVs),
van
A van is a type of road vehicle used for transporting goods or people. Depending on the type of van, it can be bigger or smaller than a pickup truck and SUV, and bigger than a common car. There is some varying in the scope of the word across th ...
s or
pickups, and even light medium-duty trucks in North America, China, and Russia use
gasoline engines (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-ca ...
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 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 Detroit Diesel two stroke engine. A large proportion of refuse trucks in the United States employ
CNG (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) but most global OEMs such as
Volvo Trucks and
Daimler AG
The Mercedes-Benz Group Aktiengesellschaft, AG (previously named Daimler-Benz, DaimlerChrysler and Daimler) is a German Multinational corporation, multinational automotive corporation headquartered in Stuttgart, Baden-Württemberg, Germany. It ...
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 powered by batteries designed to transport cargo, carry specialized payloads, or perform other utilitarian work.
Electric trucks have serviced niche applications like milk floats, pushback tugs and ...
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 Econ ...
magazine "Electric lorries will probably run on hydrogen, not batteries, which are too expensive." Other researchers say that once faster
chargers 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
Automatic may refer to:
Music Bands
* Automatic (band), Australian rock band
* Automatic (American band), American rock band
* The Automatic, a Welsh alternative rock band
Albums
* ''Automatic'' (Jack Bruce album), a 1983 electronic rock ...
and
automated manual transmissions 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 consists of two parallel boxed (tubular) or C‑shaped rails, or beams, held together by
crossmembers. 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 ...
, but can be made (whole or in part) of
aluminum for a lighter weight. A
tow bar may be found attached at one or both ends, but heavy tractors almost always make use of a
fifth wheel 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 trucks have a fully-enclosed cab at the front, with bare
chassis frame-rails behind, suitable for subsequent permanent attachment of a specialized payload, like a
fire-truck or
ambulance body.
Concrete mixers 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 trucks ("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 trucks 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 trucks 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 configuration in North America, to provide better maneuverability in tight situations. They are also among the most severe-duty and highest
GVWR trucks on public roads.
Semi-tractors ("artics" in the UK) have a fifth wheel for towing a semi-trailer instead of a body.
Tank trucks ("tankers" in the UK) are designed to carry
liquids or
gases. 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's license is required for any motor vehicle with a
Gross Vehicle Mass (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 ...
and the
EEA (and practically all European non-member states), so that common rules apply within Europe (see
European driving licence). 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 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 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, in the economics department at
Wayne State University 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'']
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. Unlike cars, , most trucks run on diesel, and
diesel exhaust is especially dangerous for health. Some countries have different vehicle emission standards for trucks and cars.
NOx and
particulates 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 mai ...
, 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
tires 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 on acceleration, or the abrupt blare of an
exhaust brake 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 retarders are allowed.
Operator health and safety
A truck cab is a
hazard control
Hierarchy of hazard control is a system used in industry to minimize or eliminate exposure to hazard (risk), hazards. that protects the truck operator from hazardous airborne pollutants. As an enclosure, it is an example of an
engineering control
Engineering controls are strategies designed to protect workers from hazardous conditions by placing a barrier between the worker and the hazard or by removing a hazardous substance through air ventilation. Engineering controls involve a physic ...
. 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 ...
s, diesel particulate matter (DPM), and other
aerosols.
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 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. The signs, such as the winning design of th
InTANDEM road safety competitionlaunched 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
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Air brake
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Animal transporter
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Articulated hauler
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Autonomous truck
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Ballast tractor
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Campervan
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Cutaway van chassis
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Dekotora, Japanese decorated trucks
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Food truck
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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 ( ...
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Great West Truck Show
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Hand truck
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Kei truck
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Haul truck
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Large goods vehicle
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List of military trucks
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List of pickup trucks
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List of trucks
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Logging truck
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Multi-stop truck
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Roll-off truck
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Tail lift
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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
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Truck classification
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Truck hijacking
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Truck scale
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Truck stop
References
External links
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Federal Motor Carrier Safety AdministrationDifferent sizes and classes of trucks in the UK*
{{Authority control
Carriages and mountings
Vehicles introduced in 1895