Backup alarms are audible signal devices, which acoustically irradiate the area behind the vehicle as soon as the reverse gear has been engaged.

The white backup light is a part of the rear lights of the vehicle lighting and serves to illuminate the road behind the vehicle and to indicate the reversing to other users of the road.

See fog light.

The base (RAM Mount) is the first component of a RAM Mount system. It is used to permanently or temporarily attach the system to the vehicle. The device carrier is mounted to it via a double socket arm. Bases are either permanently mounted on surfaces or around bodies, or non-permanently attached via clamps, magnets or suction cups.

The beam pattern characterises the spatial shape of the light output of a worklight or headlight. For worklights, a distinction is made primarily between flood, trap and spot, and furthermore, there are special modules like the mast beam pattern or the dual beam. In the …

The beam patterns of headlights must fulfil the requirements of the respective applicable road approval. These include a minimum and maximum brightness, a defined beam pattern and a definition of the light colour. A distinction is generally made in front vehicle lighting …

See turn signal.

The brightness of a headlight or work light can be described in different ways. In the past, the imprecise specification in watts was used for these purposes; today, the units lumen (or effective lumen), candela and lux are used more correctly.

In order to ensure a precise fit when replacing a headlight there are standards for headlight sizes. These are mainly given in inches. …

See incadescent lamp.