Massachusetts Trailer Laws & Trailer Regulations

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


Massachusetts Trailer Brake Laws

Every trailer having an unladed weight of more than 10,000 lbs. shall be equipped with air or electric brakes. 



Massachusetts Trailer Dimension Laws

Total length: 60 feet; trailer length: 40 feet; width: 102 inches (allows outside width to exceed 102 inches if due to an appurtenance and the state may exclude safety devices); height: 13 feet 6 inches. 



Massachusetts Trailer Hitch Laws

Every trailer, except a semitrailer, shall, in addition to a regular hitch, be fastened by safety chains to prevent it from breaking away from the towing vehicle. 



Massachusetts Trailer Signal Laws

Every trailer shall be equipped with 2 rear lights mounted 1 at each side of the rear of the vehicle so as to show 2 red lights from behind, a white light to illuminate and not obscure the rear registration plate, and 2 stop lights.



Massachusetts Trailer Lighting Laws

Every motor vehicle, including trailers, shall be equipped with at least 1 mirror so placed and adjusted as to afford the operator a clear, reflected view of the highway to the rear and left side of the vehicle. 



Massachusetts Trailer Mirror Laws

Same as passenger cars/trucks.



Massachusetts Trailer Speed Limit Laws




Massachusetts Trailer Towing Laws







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