The marker light is a signal light for trailers with dimensions 92×43×37 mm. It is mounted on the side of the vehicle to mark its presence and dimensions in traffic. The lamp receives its power from the vehicle's electrical system.
Side marker light
The side marker light clearly marks the trailer's width for oncoming and overtaking traffic. This improves safety when driving in darkness and poor weather conditions, as other road users can more easily assess the trailer's position on the road. A properly functioning side marker light is important for reducing the risk of side-impact collisions.