Which type of light is essential for visibility when towing a vehicle at night?

Auxiliary towing lights are essential for visibility when towing a vehicle at night because they provide additional illumination that ensures both the driver of the towing vehicle and other road users can see the attached trailer or vehicle. These lights enhance visibility in low-light conditions, which is especially important during nighttime travel. They help to signify the presence and dimensions of the towing setup, reducing the risk of accidents by making the vehicle configuration more apparent to others on the road.

While high beam headlights can illuminate the road, they do not specifically enhance visibility for towed vehicles, particularly when the trailer's own lights might not be adequately visible to other drivers. Emergency flashers are crucial for signaling hazard but don't increase the general visibility of the towing vehicle itself on the road. Reverse lights are primarily designed to indicate when a vehicle is backing up and are not intended for illuminating the towing arrangement or improving overall visibility while in motion.