Trailer lights are essential components of a trailer that ensure visibility and safety while towing. They typically include brake lights, turn signals, and tail lights, which alert other drivers to the trailer's movements and intentions on the road. These lights are usually powered by the towing vehicle's electrical system and are designed to be durable and weather-resistant. Proper functioning of trailer lights is crucial for compliance with traffic laws and to prevent accidents. Regular checks and maintenance can help ensure that all lights are operational. If a light is damaged or not working, it should be replaced promptly to maintain safety while towing.