Road transport

thumb|300px|Crossing from Fort Lee, New Jersey|Fort Lee, [[Bergen County, New Jersey, into Manhattan, New York in heavy automobile traffic on the George Washington Bridge, the world's busiest motor vehicle bridge, transporting approximately 300,000 cars and trucks daily across the Hudson River.]]

directionality of traffic flow, varies by national traffic laws

condition on road networks that occurs as use increases, and is characterized by slower speeds, longer trip times, and increased vehicular queueing

collective term for all forms of transport which takes place on roads

methods and measures for reducing the risk of traffic accidents, as well as death and injury on roads

traffic calming device

thumb|A convoy of United States Army|U.S. Army trucks in [[Hawaii]] A convoy is a group of vehicles, typically motor vehicles or ships, traveling together for mutual support and protection. Often, a convoy is organized with armed defensive support and can help maintain cohesion within a unit. It may also be used in a non-military sense, for example when driving through remote areas.

reserve lane by the verge of a roadway

type of city plan in which streets run at right angles to each other, forming a grid

thumb|250px|Analogue tachograph thumb|250px|Tachograph chart

barrier installed within medians of and next to roads to prevent vehicle collisions

inspection of vehicles by state institutions

cone-shaped marker used for traffic management

acute curve (often one of a series) in a road, especially on a steep incline

fence or barrier consisting of one or more horizontal rails and vertical supports

methods to slow or reduce some types or all vehicle traffic

thumb|Drive-in theater in Neu-Isenburg, Germany thumb|upright|Drive-in Ferris wheel thumb|McDonald's Curbside Pickup - Mobile - order and pay thumb|thumbtime=77|Scenes in and around a drive-in restaurant in Long Beach, California, 1952 (video)

thumb|right|Drive-through of a coffeehouse-chain in Red Bluff, California|Red Bluff, California right|thumb|Some fast food chains, such as this Rally's located near [[New Orleans, Louisiana, have two drive-throughs.]] right|thumb|Drive-through Post box|mailboxes in Los Altos, [[California, United States]]

notice issued by a law enforcement official to a motorist or other road user, indicating that the user has violated traffic laws

thumb|This coach, designed without a driver's seat, and is guided by a postilion riding the left-side horse. thumb|Postilions control the horses drawing the Diamond Jubilee State Coach|Queen's coach at the [[State Opening of Parliament, London 2015.]] thumb|Postilions at the Death and state funeral of Ronald Reagan|state funeral of Ronald Reagan, 2004 thumb|I ANZAC Corps|ANZAC horses and postilions struggle to move a gun, Passchendaele, 1917, by [[Harold Septimus Power.]] A postilion or postillion is a person who rides a harnessed horse that is pulling a horse-drawn vehicle such as a coach, ra

load that exceeds the standard or ordinary legal size and/or weight limits

concept in traffic law

road owned and maintained by a private individual, organization, or company

that the equilibrium speed of car traffic on a road network is determined by the average door-to-door speed of equivalent journeys taken by public transport or the next best alternative

thumb|The battered remains of a roadkilled White-tailed deer|deer on [[South Carolina Highway 170 by the Chechessee River in South Carolina, US]] thumb|Wide-ranging large carnivores like this [[bear are particularly vulnerable to becoming roadkill.]] Roadkill is a wild animal that has been killed by collision with motor vehicles. Wildlife-vehicle collisions (WVC) have increasingly been the topic of academic research to understand the causes, and how they can be mitigated.

traffic management concept

thumb|A partial detour in the United States, with the road restricted to local traffic only. A detour or (British English: diversion) is a (normally temporary) route taking traffic around an area of prohibited or reduced access, such as a construction site. Standard operating procedure for many roads departments is to route any detour over roads within the same jurisdiction as the road with the obstructed area.

thumb|right|Replacing the old road with concrete Pavers (flooring)|pavers in Bo'ao Road area, [[Haikou City, Hainan, China.]] thumb|Worn asphalt concrete being removed before laying a new layer in [[Roberttown, UK ]] Roadworks, also called road construction or road work, occur when part of a road, or in rare cases, the entire road, has to be occupied for work relating to the road, most often in the case of road surface repairs. In the United States road work could also mean any work conducted in close proximity of travel way (thoroughfare) such as utility work or work on power lines (i.e. tele

service that assists motorists, motorcyclists, or bicyclists

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salt applied to road surfaces to lower the freezing point of water in order to prevent ice or snow buildup

penetration test for evaluation of the mechanical strength of road subgrades and basecourses

long-distance journey on the road

thumb|Deutsche Bahn pedelecs with rear hub motors and batteries placed inside the frames. This is the "Jetstream" from [[Riese und Müller.]]

device for counting bicycle traffic

thumb|right|Sign prohibiting jaywalking in Singapore's Orchard Road Jaywalking is the act of pedestrians walking in or crossing a roadway if that act contravenes traffic regulations. The term jay-walker originated in the United States as a derivation of the phrase jay-driver (the word jay meaning a greenhorn, or rube), referring to people who drove horse-drawn carriages and automobiles on the wrong side of the road. The term is not a historically neutral one.

300px|thumb|A bullbar on a Land Rover Discovery fitted with spotlights and a [[sand flag.]] thumb|Push bar of a police car in Abu Dhabi, used to move stranded vehicles out of the way

method of driving using short cuts

study of interactions between travellers and infrastructure

instance of one physical road bearing two or more different highways

thumb|right|Layers in the construction of a mortarless pavement: A.) Subgrade B.) Subbase (pavement)|Subbase C.) [[Base course D.) Paver base E.) Pavers F.) Fine-grained sand]] 450px|thumb|right|Section through railway track and foundation showing the sub-grade In transport engineering, subgrade is the term used in the US for the native material underneath a constructed road, pavement or railway track (US: railroad track). In British English it is called formation level.

Mobile object monitoring system

communication of road network conditions

form of intermodal transport

tool to determine geometric features of a new road

theory

means for automatically determining and transmitting the geographic location of a vehicle

positive and negative impacts of cars on society

road traffic theory more roads leads to more traffic filling the roads, negating speed gains, and often only shifting congestion to other junctions

type of highway congestion

right|thumb|Gridlock on a network of two-way streets. The red cars are those causing the gridlock by stopping in the middle of the intersection. Gridlock is a form of traffic congestion where continuous queues of vehicles block an entire network of intersecting streets, bringing traffic in all directions to a complete standstill. The term originates from a situation possible in a grid plan where intersections are blocked, preventing vehicles from either moving forwards through the intersection or backing up to an upstream intersection.

number assigned to a road junction, usually an exit from a freeway

collective sound energy emanating from motor vehicles. It consists chiefly of road surface, tire, engine/transmission, aerodynamic, and braking elements

unlawful killing of another human by criminally negligent or murderous operation of a vehicle

right to make a "way" (as in a type of easement) over a piece of land

directional marker on a road or footpath

fundamental diagram

shuttle train used to transport accompanied cars, and usually also other types of road vehicles

public bench for waiting for a spontaneous, free ride in a car

container for a mixture of salt and grit