
Off-roading is the act of
driving
Driving is the controlled operation and movement of a land vehicle, including cars, motorcycles, trucks, and buses. A driver's permission to drive on public highways is granted based on a set of conditions being met, and drivers are required to ...
or riding in a vehicle on unpaved surfaces such as sand, dirt, gravel, riverbeds, mud, snow, rocks, or other natural terrain. Off-roading ranges from casual drives with regular vehicles to competitive events with customized vehicles and skilled drivers.
Off-road vehicle
Off-road vehicles are either capable of or specifically developed for off-road driving. These vehicles often have features designed specifically for use in off-road conditions such as
suspension lifts,
off-road tires,
skid plates,
snorkels,
roll cage
A roll cage is a specially engineered and constructed frame built in (or sometimes around, in which case it is known as an exo cage) the passenger compartment of a vehicle to protect its occupants from being injured or killed in an accident, pa ...
s, or strengthened
drivetrain
A drivetrain (also frequently spelled as drive train or sometimes drive-train) or transmission system, is the group of components that deliver mechanical power from the prime mover to the driven components. In automotive engineering, the driv ...
s.
Types of recreational off-roading
Dune bashing

Dune bashing is a specific form of off-roading performed on
sand dunes.
Dune Buggies,
Sport-utility vehicles, and
ATVs are often used. Vehicles driven on sand dunes are often equipped with a roll cage for safety in the case of an
overturn
''Overturn'' is a video game developed by Japanese company Studio Zan for WiiWare. It was released in Japan on December 2, 2008, in North America on August 3, 2009, and in Europe on February 12, 2010, by Gamebridge as ''Overturn: Mecha Wars''.
...
. The
tire pressure is often reduced to gain more
traction by increasing the footprint of the tire and lowering the
ground pressure
Ground pressure is the pressure exerted on the ground by the tires or tracks of a motorized vehicle, and is one measure of its potential mobility, especially over soft ground. It also applies to the feet of a walking person or machine. Pressure ...
of the vehicle on the sand, comparable to a person wearing
snowshoe
Snowshoes are specialized outdoor gear for walking over snow. Their large footprint spreads the user's weight out and allows them to travel largely on top of rather than through snow. Adjustable bindings attach them to appropriate winter footw ...
s to walk on snow without sinking.
Some cars are equipped with
beadlock wheels, which allow tire pressure to be lowered even further without risking separation of the tire and rim.
Upon entering the desert, it is customary for drivers to meet with a pack of other vehicles and a group leader before proceeding. The group leader then leads the pack through the stunts in a single file line. The rationale for this technique is to prevent drivers from becoming disoriented and getting lost.
Off-road racing
Desert racing
High-speed racing in the desert includes chases and racing at maximum speed through rough desert
terrain
Terrain (), alternatively relief or topographical relief, is the dimension and shape of a given surface of land. In physical geography, terrain is the lay of the land. This is usually expressed in terms of the elevation, slope, and orientati ...
with numerous pots and bumps. Drivers often use rear-wheel drive and 4-wheel drive trucks with long-travel
suspension and wide stance between the front enlarged tires, which maintains optimal stability at high speed. These types of trucks are often called
Trophy trucks or PreRunners.
Rock racing
Rock racing involves driving over rocks, but unlike rock crawling, does not specify penalties for striking cones, backing up, or
winch
A winch is a mechanical device that is used to pull in (wind up) or let out (wind out) or otherwise adjust the tension (physics), tension of a rope or wire rope (also called "cable" or "wire cable").
In its simplest form, it consists of a Bobb ...
ing. In addition, rock racing incorporates a level of high-speed racing that is not characteristic of
rock crawling.
Rallying
''See article:''
Rally
Rally or rallye may refer to:
Gatherings
* Political demonstration, a political rally, a political demonstration of support or protest, march, or parade
* Pep rally, an event held at a North American school or college sporting event
Sport ...
Mudding and mud plugging

Mudding is off-roading through an area of wet mud or clay, leading to extremely low traction and problems with moving forward.
The goal is to drive as far as possible without getting stuck. There are many types of tires that are often used for this activity, including balloon tires, mud-terrain tires and
paddle tires. The activity is popular in the
United States
The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...
, although it is illegal on public land due to the environmental impact.
Mud plugging, as practiced in the
United Kingdom
The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Northwestern Europe, off the coast of European mainland, the continental mainland. It comprises England, Scotlan ...
, refers to the
motorsport
Motorsport or motor sport are sporting events, competitions and related activities that primarily involve the use of Car, automobiles, motorcycles, motorboats and Aircraft, powered aircraft. For each of these vehicle types, the more specific term ...
of
classic trials
Classic trials, or colloquially mud plugging, is one of the oldest forms of rallying or off-roading, off-road motor sports, dating from the beginning of the 20th century. Originally, the challenge was just to complete a long (challenging) road cou ...
, where the main objective is to complete a challenging course of (mostly unpaved) roads and (often muddy, and frequently uphill) off-road terrain.
This form of motorsport is one of the oldest to survive to this day, dating back at least to the 1920s.
Rock crawling
Rock crawling involves driving over rocky terrain, with the goal of getting as far as possible with the fewest penalties. Penalties are received for striking cones, using a winch to get unstuck, going out of bounds, and going in reverse. These rules lead to the sport being technical, with drivers having to plan ahead to reduce the penalties they receive. Vehicles used for rock crawling are usually modified with different
tires
A tire (North American English) or tyre (Commonwealth English) is a ring-shaped component that surrounds a wheel's rim to transfer a vehicle's load from the axle through the wheel to the ground and to provide traction on the surface over w ...
, suspension components that allow greater
axle articulation, and changes in the
differential gear ratio to obtain characteristics suitable for low-speed operation for traversing obstacles. Commonly, rock crawlers have a "
spotter", who is an assistant on foot by the vehicle to provide information about areas out of the driver's field of view.
Competitive trials
All progress is made at low speed and the emphasis is on skill rather than on finishing first, although trialing can be highly competitive. There are three traditional forms of off-road trialing. During some competitive events, such as the Turkey Run in Idaho and other events around the United States, point systems may be used to determine rewards.
RTV trialing
RTV (Road Taxed Vehicle) trialing is the most common form of trialing. As the name suggests, it is for vehicles that are road-legal (and thus required to pay
road tax
Road tax, known by various names around the world, is a tax which has to be paid on, or included with, a motorised vehicle to use it on a public road.
National implementations Australia
All states and territories require an annual vehicle regist ...
). This excludes vehicles that are highly modified or specially built. RTV-class vehicles can carry a wide range of suspension modifications, as well as off-road tires (provided they are road-legal), recovery winches, raised air intakes, etc. Vehicles on RTV trials are usually best described as "modified from standard"—they use the standard chassis, drive-train, and body that the vehicle was built with, but are fitted with a wide array of modifications to assist in the trailing. Whilst modification is not necessarily required for an RTV trial, at the very least the vehicle would be expected to have some underbody and over-the-body protection such as skid plates or roll cages, often made from durable
stainless steel
Stainless steel, also known as inox, corrosion-resistant steel (CRES), or rustless steel, is an iron-based alloy that contains chromium, making it resistant to rust and corrosion. Stainless steel's resistance to corrosion comes from its chromi ...
,
aluminium
Aluminium (or aluminum in North American English) is a chemical element; it has chemical symbol, symbol Al and atomic number 13. It has a density lower than that of other common metals, about one-third that of steel. Aluminium has ...
or
mild steel
Carbon steel is a steel with carbon content from about 0.05 up to 2.1 percent by weight. The definition of carbon steel from the American Iron and Steel Institute (AISI) states:
* no minimum content is specified or required for chromium, cobalt ...
. RTV courses are intended to be non-damaging and driven at little more than a walking pace and a course properly laid out would be drivable without damage. However, the terrain usually includes steep slopes, water, side slopes, deep ruts, and other obstacles that could potentially damage a vehicle if mistakes are made or poor driving techniques are used. As such, the use of modifications can increase the chances of success.
RTV trials usually take place on farmland, a quarry site, or at a dedicated off-road driving center and are usually organized by a dedicated trialing body (such as the All-Wheel Drive Club or the Association of Land Rover clubs in the UK, or by a vehicle owner's club. The course consists of 10 to 12 "gates" marked by two garden canes (sticks) and are vertically placed. The gates are just wide enough to get a standard vehicle through. Vehicles start in a stagger, proceeding one by one, and are deemed to have cleared a gate if at least one of the front wheel hubs passes between the canes. The vehicle's attempt ends when it comes to a stop (depending on the exact level of skill the trial is aimed at any stopping may end the attempt, or a few seconds may be allowed). Long-wheelbase vehicles are usually allowed to perform a three-point turn if needed, providing the driver declares where the turn is going to be made before they attempt the course (this puts a strong emphasis on ground-reading ability). This can also be called a "shunt", where the driver has to attempt a gate and then shout "shunt". They are then allowed a space of one and a half car lengths to reverse and line the car better to enter through the gate
The course between the gates is a "section": between the start line and the first gate is "Section 1", the part between the first and second gates is "Section 2" and so on. An RTV course is often laid out so that each section is progressively more difficult, although this is not always the case. If a driver fails to complete Section 1 they are given 10 points. If the attempt ends in Section 2, 9 points are awarded, etc. A clear round results in gaining only 1 point. A day's event will consist of many different courses and the driver with the lowest score is the winner.
Since the terrain covered in RTV trials should be well within the capabilities of any reasonably capable vehicle (even in standard form), these trials emphasize driver skill and ground-reading abilities. Skill and experience have a larger bearing on success than having a well-equipped and modified car.
CCV trialing
Cross Country Vehicle (CCV) trialing is the next step up from RTV trialing and is open to non-road-legal vehicles, which greatly increases the scope for modification. The terrain covered will be of greater difficulty than that found on an RTV trial. Since there is a risk of touching rocks and trees with the bodywork, CCV trialing will usually require more careful use of speed to get the vehicle across certain obstacles will attempting to mitigate the risk of vehicle damage. Whilst no trial is intended to be vehicle-damaging, mistakes and accidents are inevitable. A standard-specification vehicle would not be expected to be able to complete a CCV course, but it would still be possible.
The event is run along the same lines as RTV, with a course made up of cane-marked gates.
CCV trialing differs greatly from RTV trials in the vehicles used. Since CCV judges adopt an "anything goes" attitude, CCV trials rely on having the correct vehicle to a much greater extent than in an RTV trial. Competitors can design and build vehicles that are much more optimized for off-road use, than in the lower ranks of trialing. CCV vehicles have powerful engines, high ground clearance, light, minimalist bodywork, and good
approach and departure angles. For many years, in the UK, the ultimate CCV vehicle could be built by taking the chassis of a
Range Rover, removing the body, cutting the chassis down to an 80-inch wheelbase, and attaching it to the body of a
Series I Land Rover, retaining the Range Rover's V8 engine and coil-spring suspension in a light, maneuverable body. In recent years, the value of early Land Rovers and Range Rovers has risen to the extent that this is no longer practical. CCV trailers now usually base their vehicles around
Land Rover Defenders or a standard 100-inch chassis from a Range Rover or
Series I Discovery. The
Suzuki SJ series of vehicles also make good bases for CCV-spec vehicles. Some vehicles are specially built, taking the form of light "buggies" with tractor tires and "fiddle" brakes (fiddle brakes give the ability to lock a wheel, which enables much better turning, better control descending hills, traction control by slowing or locking the spinning wheel) for the best performance.
Vehicles are required to meet certain safety regulations. Roll-cages must be fitted and be built to a suitable standard, recovery points must be fitted front and rear and fuel tanks must meet certain standards. A 4-point harness for all occupants is required and a fire extinguisher is recommended.
Off-roading events

In some countries off-road activities are strictly regulated, while others promote cross-country
off-road endurance events like the
Dakar Rally
The Dakar Rally () or simply "The Dakar" (), formerly known as the Paris–Dakar Rally (), is an annual rally raid organised by the Amaury Sport Organisation (ASO). It is an off-road endurance event traversing terrain much tougher than convent ...
,
Spanish Baja,
Africa Eco Race,
Abu Dhabi Desert Challenge,
Russian Baja Northern Forest,
King of the Hammers,
San Felipe 250 and
Baja 500 & 1000, which are a test of navigation skills and machine durability. Off-road parks and
motocross
Motocross is a form of off-road motorcycle racing held on enclosed off-road circuits. The sport evolved from motorcycle trials competitions held in the United Kingdom.
History
Motocross first evolved in Britain from motorcycle trials competi ...
tracks also host several events and may be the only legal place to off-road in the area.
Criticism of ORV use
Environmental impact

Off-road vehicle use on
public land
In all modern states, a portion of land is held by central or local governments. This is called public land, state land, or Crown land (Commonwealth realms). The system of tenure of public land, and the terminology used, varies between countries. ...
has been criticized by some members of the U.S. government
and environmental organizations including the
Sierra Club
The Sierra Club is an American environmental organization with chapters in all 50 U.S. states, Washington, D.C., Washington D.C., and Puerto Rico. The club was founded in 1892, in San Francisco, by preservationist John Muir. A product of the Pro ...
and
The Wilderness Society.
They have noted several consequences of illegal ORV use such as
pollution
Pollution is the introduction of contaminants into the natural environment that cause harm. Pollution can take the form of any substance (solid, liquid, or gas) or energy (such as radioactivity, heat, sound, or light). Pollutants, the component ...
,
trail
A trail, also known as a path or track, is an unpaved lane or a small paved road (though it can also be a route along a navigable waterways) generally not intended for usage by motorized vehicles, usually passing through a natural area. Ho ...
damage,
erosion
Erosion is the action of surface processes (such as Surface runoff, water flow or wind) that removes soil, Rock (geology), rock, or dissolved material from one location on the Earth's crust#Crust, Earth's crust and then sediment transport, tran ...
,
land degradation
Land degradation is a process where land becomes less healthy and productive due to a combination of Human impact on the environment, human activities or natural conditions. The causes for land degradation are numerous and complex. Human activitie ...
, possible
species extinction,
and
habitat destruction
Habitat destruction (also termed habitat loss or habitat reduction) occurs when a natural habitat is no longer able to support its native species. The organisms once living there have either moved elsewhere, or are dead, leading to a decrease ...
which can leave hiking trails impassable.
ORV proponents argue that legal use taking place under planned access along with the multiple environment and trail conservation efforts by ORV groups will mitigate these issues. Groups such as the BlueRibbon Coalition advocate for the responsible use of public lands for off-road activities.
According to the
U.S. Forest Service, the use of old-style
two-stroke engine
A two-stroke (or two-stroke cycle) engine is a type of internal combustion engine that completes a Thermodynamic power cycle, power cycle with two strokes of the piston, one up and one down, in one revolution of the crankshaft in contrast to a f ...
s, previously common in ATVs and
snowmobiles designed for off-road use, also causes concerns about
pollution
Pollution is the introduction of contaminants into the natural environment that cause harm. Pollution can take the form of any substance (solid, liquid, or gas) or energy (such as radioactivity, heat, sound, or light). Pollutants, the component ...
. This is because "two-stroke engines emit about 20 to 33 percent of the consumed fuel through the exhaust" (as the engine lubricant is a "total loss system" and is emitted by design) and "discharge from two-stroke snowmobile engines can lead to indirect pollutant deposition into the top layer of snow and subsequently into the associated surface and groundwater".
Noise pollution
Noise pollution, or sound pollution, is the propagation of noise or sound with potential harmful effects on humans and animals. The source of outdoor noise worldwide is mainly caused by machines, transport and propagation systems.Senate Publi ...
is also a concern
and several studies conducted by
Montana State University,
California State University
The California State University (Cal State or CSU) is a Public university, public university system in California, and the List of largest universities and university networks by enrollment, largest public university system in the United States ...
,
University of Florida
The University of Florida (Florida or UF) is a public university, public land-grant university, land-grant research university in Gainesville, Florida, United States. It is a senior member of the State University System of Florida and a preem ...
and others have cited possible negative behavioral changes in wildlife as the result of some ORV use.
Some U.S. states have laws to reduce noise generated by off-road and non-highway vehicles. Washington is one example: "State law requires off-road and other non-highway vehicles to use specified noise-muffling devices (RCW 46.09.120(1) (e) maximum limits and test procedures). State agencies and local governments may adopt regulations governing the operation of non-highway vehicles on property, streets, or highways within their
jurisdiction
Jurisdiction (from Latin 'law' and 'speech' or 'declaration') is the legal term for the legal authority granted to a legal entity to enact justice. In federations like the United States, the concept of jurisdiction applies at multiple level ...
, provided they are not less stringent than state law (RCW 46.09.180 regulation by local political subdivisions)".
Mojave desert controversy
The
U.S. Bureau of Land Management (BLM) supervises several large off-road vehicle areas in California's
Mojave Desert
The Mojave Desert (; ; ) is a desert in the rain shadow of the southern Sierra Nevada mountains and Transverse Ranges in the Southwestern United States. Named for the Indigenous peoples of the Americas, indigenous Mohave people, it is located pr ...
.
In 2009, U.S. District Judge
Susan Illston ruled against the BLM's proposed designation of additional off-road use on designated open routes on public land. According to the ruling, the BLM violated its regulations
when it designated approximately of off-road vehicle routes in 2006.
According to Judge Illston the BLM's designation was "flawed because it does not contain a reasonable range of alternatives" to limit damage to sensitive habitat, as required under the National Environmental Policy Act.
Illston found that the Bureau had inadequately analyzed the route's impact on air quality, soils, plant communities and sensitive species, such as the endangered
Mojave fringe-toed lizard, pointing out that the United States Congress has declared that the California Desert and its resources are "extremely fragile, easily scarred, and slowly healed".
The court also found that the BLM failed to follow route restrictions established in the agency's conservation plan, resulting in the establishment of hundreds of illegal OHV routes during the previous three decades.
The plan violated the BLM's regulations, specifically the
Federal Land Policy and Management Act of 1976
The Federal Land Policy and Management Act (FLPMA) is a United States federal law that governs the way in which the public lands administered by the Bureau of Land Management are managed. The law was enacted in 1976 by the 94th Congress and is ...
(FLPMA) and the
National Environmental Policy Act of 1969 (NEPA).
The ruling was considered a success for a coalition of conservation groups including the Friends of Juniper Flats, Community Off-road Vehicle Watch, California Native Plant Society,
The Center for Biological Diversity,
The Sierra Club, and
The Wilderness Society who initiated the legal challenge in late 2006.
Roadless area conservation
Many U.S.
national park
A national park is a nature park designated for conservation (ethic), conservation purposes because of unparalleled national natural, historic, or cultural significance. It is an area of natural, semi-natural, or developed land that is protecte ...
s have discussed or enacted
roadless rules and partial or total bans on ORVs. To accommodate enthusiasts, some parks like
Big Cypress National Preserve
Big Cypress National Preserve is a United States National Preserve located in South Florida, about 45 miles (72 kilometers) west of Miami on the Atlantic coastal plain. The Big Cypress, along with Big Thicket National Preserve in Texas, beca ...
in
Florida
Florida ( ; ) is a U.S. state, state in the Southeastern United States, Southeastern region of the United States. It borders the Gulf of Mexico to the west, Alabama to the northwest, Georgia (U.S. state), Georgia to the north, the Atlantic ...
, were created specifically for ORVs and related purposes. However, such designations have not prevented damage or abuse of the policy.
Public statements
In 2004, several environmental organizations sent a letter t
Dale Bosworth Chief of the
United States Forest Service
The United States Forest Service (USFS) is an agency within the United States Department of Agriculture, U.S. Department of Agriculture. It administers the nation's 154 United States National Forest, national forests and 20 United States Natio ...
, and described the extent of damage caused by ORV use, including health threats to other people:
It is well-established that the proliferation of off-road vehicles and snowmobile use places soil, vegetation, air and water quality, and wildlife at risk through pollution, erosion, sedimentation of streams, habitat fragmentation and disturbance, and other adverse impacts to resources. These impacts cause severe and lasting damage to the natural environment on which human-powered and equestrian recreation depends and alter the remote and wild character of the backcountry. Motorized recreation monopolizes forest areas by denying other users the quiet, pristine, backcountry experience they seek. It also presents safety and health threats to other re-creationists.[Letter to Dale Bosworth]
/ref>
In 2004 the
Supreme Court
In most legal jurisdictions, a supreme court, also known as a court of last resort, apex court, high (or final) court of appeal, and court of final appeal, is the highest court within the hierarchy of courts. Broadly speaking, the decisions of ...
Justice
Antonin Scalia
Antonin Gregory Scalia (March 11, 1936 – February 13, 2016) was an American jurist who served as an associate justice of the Supreme Court of the United States from 1986 until his death in 2016. He was described as the intellectual an ...
listed several problems that result from ORV use in natural areas. From th
Environmental News Servicearticle:
Scalia noted that off-road vehicle use on federal land has "negative environmental consequences including soil disruption and compaction, harassment of animals, and annoyance of wilderness lovers.
Several environmental organizations, including the Rangers for Responsible Recreation, are campaigning to draw attention to a growing threat posed by off-road vehicle misuse and to assist overmatched land managers in addressing ORV use impacts. These campaigns in part have prompted congressional hearings about the growing impact of unmanaged off-road vehicle use.
The House Natural Resources Committee Subcommittee on National Parks, Forests and Public Lands held an oversight hearing on "The Impacts of Unmanaged Off-Road Vehicles on Federal Land" on March 13, 2008. A second hearing on off-highway vehicle (OHV) management on public lands was held by the Senate Energy and Natural Resources Committee on June 5, 2008.
The Senate committee hearing was convened to find out why the agencies are failing to grapple with the negative impacts of off-road vehicle use on US public lands and what the agencies might need to start doing differently. For the first time in perhaps a decade, members of the Senate Energy and Natural Resources Committee grilled leaders of the Forest Service and the BLM about why off-road vehicle use is being allowed to damage America's national treasures.
Taking center stage in the discussion was the "travel planning process", a complex analysis and decision-making procedure to designate appropriate roads and trails. Both the Forest Service and BLM have been engaged in somewhat similar travel planning processes now for years, but some of the committee members didn't seem to think those processes were going along so well. "The BLM has identified travel management on its lands as ‘one of the greatest management challenges’ it faces," stated committee Chairman
Jeff Bingaman
Jesse Francis "Jeff" Bingaman Jr. (born October 3, 1943) is an American retired politician who served as a United States Senate, United States Senator from New Mexico from 1983 to 2013. A member of the Democratic Party (United States), Democratic ...
, D-NM. "Likewise, the Forest Service has identified unmanaged recreation — including ORV use — as one of the top four threats to the management and health of the National Forest System. Despite these statements, it seems to me that neither agency has been able to successfully manage off-road use."
"Existing rules for managing off-road vehicles are not being enforced," Bingaman added, and the agencies are ignoring unregulated use "with significant consequences for the health of our public lands and communities, and adverse effects on other authorized public land uses."
File:Motorcycle-Forest-Damage.jpg, Negative environmental effects caused by a motorcycle to a portion of the Los Padres National Forest
Los Padres National Forest is a United States national forest in Southern California, southern and central California. Administered by the United States Forest Service, Los Padres includes most of the mountainous land along the California coast ...
File:Orv-damage.jpg, Damage that occurred when vehicles left the posted trail in Anza-Borrego Desert State Park
Anza-Borrego Desert State Park (, ''Help:Pronunciation respelling key, AN-zə bə-RAY-goh'') is a California State Park located within the Colorado Desert of Southern California, United States. Created in 1932, the park takes its name from 18th ...
In gaming
Video games that allow users to off-road include ''
Forza Horizon'', ''
Dirt Series,
MudRunner'', ''
Grand Theft Auto V
''Grand Theft Auto V'' is a 2013 action-adventure game developed by Rockstar North and published by Rockstar Games. It is the seventh main entry in the Grand Theft Auto, ''Grand Theft Auto'' series, following 2008's ''Grand Theft Auto IV'', and ...
'', ''Dakar Desert Rally'', and the ''
MotorStorm'' series.
See also
*
All-terrain vehicle
An all-terrain vehicle (ATV), also known as a light utility vehicle (LUV), a quad bike or quad (if it has four wheels), as defined by the American National Standards Institute (ANSI), is a vehicle that travels on low-pressure tires, has a seat ...
*
Amphibious vehicle
An amphibious vehicle (or simply amphibian) is a vehicle that works both on land and on or under water. Amphibious vehicles include amphibious Amphibious cycle, bicycles, Amphibious ATV, ATVs, Amphibious automobile, cars, Duckboats, buses, truc ...
*
Approach and departure angles
*
Baja Bug
*
Breakover angle
Breakover angle or rampover angle is the maximum possible supplementary angle (usually expressed in degrees) that a vehicle, with at least one forward wheel and one rear wheel, can drive over without the Apex (geometry), apex of that angle touchi ...
*
Dirt Bike
In the market, there is a wide variety of types of motorcycles, each with unique characteristics and features. Models vary according to the specific needs of each user, such as ''standard'', ''cruiser'', ''touring'', ''sports'', ''off-road'', '' ...
*
Dual-sport motorcycle
*
Game viewer vehicle
*
Mountain bike
A mountain bike (MTB) or mountain bicycle is a bicycle designed for off-road cycling (''mountain biking''). Mountain bikes share some similarities with other bicycles, but incorporate features designed to enhance durability and performance in r ...
*
Mud bogging
*
Overlanding
*
Ramp travel index
*
Ride height
*
Side-by-side
*
Trophy truck
Further reading
Environmental Hazards of Dune Bashing
References
Notes
Bibliography
*
External links
The National Trust (UK)
{{DEFAULTSORT:Off-Roading
Outdoor recreation
Human impact on the environment