What must motorcycles towing trailers not do?

Motorcycles towing trailers are subject to specific regulations that prioritize safety and proper roadway use. When a motorcycle is towing a trailer, it must adhere to restrictions regarding speed, lane usage, and positioning on the roadway.

Exceeding 55 mph is particularly important for motorcycles towing trailers because the added weight and length can significantly affect handling and braking capabilities. Maintaining a lower speed helps ensure stability and gives the rider greater control.

Using carpool lanes is also restricted for motorcycles with trailers, as these lanes are typically designated for certain types of vehicles to reduce congestion. Allowing motorcycles with trailers in these lanes could lead to dangerous situations due to the increased length of the vehicle combination, which may not maneuver as easily or safely as a motorcycle alone.

Keeping right is a common traffic rule that promotes safety and flow. Motorcycles towing trailers should maintain a position in the right lane to allow faster vehicles to pass and to reduce the risk of being involved in collisions.

Thus, the correct answer encompasses all these points, indicating that motorcycles towing trailers must not exceed 55 mph, use carpool lanes, or, for safety reasons, should keep right. This comprehensive understanding of the restrictions helps ensure safe riding practices for motorcyclists on the road.