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control

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…

Crossroad

Crossroad

A crossroad or intersection is a place where two or more roads or streets meet or cross. Crossroads may be classified by number of road segments…

Car

Car

A car or automobile is a wheeled motor vehicle used for transportation. Basically a car drives primarily on roads, seats one to eight people, ha…

Blind spot

Blind spot

A blind spot in a vehicle is an area around the vehicle that cannot be directly observed by the driver while at the controls, under existing cir…

Barriers

Barriers

A barrier is a closing mechanism that serves to control the use of a passage or access. Other names that are used are barrier, lever and barel. …

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