What is the requirement for lights and reflectors on the side of the trailer?

The requirement for lights and reflectors on the side of the trailer is that they should be clean and in working condition. This ensures that the vehicle is visible to others on the road, especially in low-light conditions, thereby enhancing safety. Proper visibility prevents accidents and allows other drivers to gauge the size and movement of the trailer.

Keeping lights and reflectors clean ensures that they can effectively perform their function of signaling and illuminating the vehicle's presence. If the lights are not operational or are obscured by dirt, other drivers may not see the trailer, increasing the risk of collisions.

Additionally, having a complete set of functional lights and reflectors is often mandated by regulations, ensuring compliance with safety standards. This is crucial for both the driver's safety and the safety of others on the road.