汽车灯包括大灯（又称头灯，包括远光灯、近光灯）、位置灯、刹车灯、倒车灯、尾灯、雾灯、牌照灯、白天行车灯与转向灯。

夜间在无照明设备的路段(如郊外)使用。当对面来车时应切换为近光灯，以免强光晃眼，影响对方司机视线。

远光灯的照明有效距离应在150米。

The lighting system of a motor vehicle consists of lighting and signalling devices mounted or integrated to the front, rear, sides, and in some cases the top of a motor vehicle. This lights the roadway for the driver and increases the conspicuity of the vehicle, allowing other drivers and pedestrians to see a vehicle's presence, position, size, direction of travel, and the driver's intentions regarding direction and speed of travel. Emergency vehicles usually carry distinctive lighting equipment to warn drivers and indicate priority of movement in traffic.