How far must trailer lights be visible from?

Trailer lights must be visible from a distance of 1000 feet to ensure that other drivers can see them, particularly in low light or adverse weather conditions. This visibility requirement is crucial for safety on the roads, as it allows vehicles approaching from behind to be aware of the presence of a trailer, thus reducing the risk of accidents. Properly functioning and visible trailer lights signal to other drivers important information about your vehicle's movement and intentions, such as turning or stopping. This standard is part of the broader regulations intended to improve highway safety for all road users and to ensure that trailers are adequately marked when on the road.