Wyoming Trailer Laws & Trailer Regulations

Wyoming's laws and regulations for trailers are listed below:


Wyoming Trailer Brake Laws

Every combination of vehicles must have a service braking system that will stop the combination of vehicles within 40 feet from an initial speed of 20 mph on a level, dry, smooth, hard surface.

Every combination of vehicles must have a parking brake system adequate to hold the combination of vehicles on any grade on which it is operated under all conditions of loading on a surface free from snow, ice, or loose material.



Wyoming Trailer Dimension Laws

Total length: 85 feet; trailer length: 45 feet; width: 102 inches (excludes safety devices approved by the state); height: 14 feet. 



Wyoming Trailer Hitch and Signal Laws

Ball hitch mounted on bumper is permitted. 



Wyoming Trailer Lighting Laws

A motor vehicle which is greater than 50 inches in width, trailer, semitrailer, pole trailer or any other vehicle which is being drawn at the end of a combination of vehicles, shall be equipped with at least 2 tail lamps mounted on the rear; either as a part of the tail lamps or separately, 2 or more red reflectors; 2 or more stop lamps; and electrical flashing turn lamps.



Wyoming Trailer Mirror Laws

Two mirrors are required, 1 on the left-hand side and 1 on the center of the windshield or the right-hand side. If the mirror on the windshield is obstructed, a right-hand mirror is required. It must be positioned to reflect to the driver a view of the highway to the rear of the trailer. 



Wyoming Trailer Speed Limit Laws

Same as for passenger cars/trucks.



Wyoming Trailer Towing Laws

No person may occupy a house trailer while it is being towed on a public highway. 





The United States Trailer Laws and Regulations by State by is not an inclusive list of laws, regulations and it should be used by reference only and not used for any other purpose. is not liable for incorrect or incomplete information. To report an error, incomplete or incorrect information, please send an email to