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Emergency lane

Emergency lane

A shoulder is an emergency stopping lane by the verge of a road or motorway. The purpose of building a shoulder is that in the event of an emerg…

Emergency exit

Emergency exit

An emergency exit in a structure is a special exit for emergencies such as a fire: the combined use of regular and special exits allows for fast…

Customs

Customs

Customs is an authority or agency in a country responsible for collecting tariffs and for controlling the flow of goods, including animals, tran…

Crosswind

Crosswind

A crosswind is any wind that has a perpendicular component to the line or direction of travel. This affects the aerodynamics of many forms of tr…

Traffic lights

Traffic lights

By means of light signals, traffic lights control the crossing of an intersection, the access to bridges, tunnels and railway crossings, the acc…

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