What is the requirement for trailers regarding reflectors?

Trailers are required to have two reflectors for safety and visibility reasons. This requirement ensures that a trailer can be seen from various angles and distances, helping to prevent accidents and improve road safety, especially in low-light conditions or inclement weather. The placement of two reflectors allows for effective reflection of light from vehicles approaching from behind, which is crucial for alerting drivers to the presence of a trailer on the road. Having only one reflector would not provide sufficient visibility or safety, while three or four reflectors may be unnecessary and could complicate the design without significant benefits. Thus, the standard of two reflectors strikes a balance between visibility and practicality on trailers.