What requirements do lights and reflectors at the rear of the trailer need to meet?

The correct answer identifies that lights and reflectors at the rear of the trailer must be in the proper color and free from cracks or breaks. This requirement is critical for safety, as functioning lights are essential for visibility, especially during night driving or in adverse weather conditions. The correct color, typically red for the rear lights and reflectors, ensures that other drivers can accurately assess the position and movement of the trailer.

Any cracks or breaks in the lights or reflectors can severely diminish their effectiveness, potentially leading to dangerous situations on the road if other drivers are unable to see the trailer clearly. Thus, maintaining the integrity and visibility of these components is not only a requirement but also a pivotal aspect of road safety.