What are the Motocross Helmet Regulations?

Basic Department of Transportation (DOT) regulations, as outlined in the Code of Federal Regulations Title 49, apply to all helmets, including those used in Motocross. However, a few additions to a Motocross helmet are not outlined in the federal code that apply, especially in regards to competitive motocross racers.

  1. Basic Requirements for a Helmet

    • The DOT has outlined that the basic requirements of a helmet include that the helmet will provide a vision clearance of at least 105 degrees to each side. The brow opening will be at least 1 inch above each point in the basic plane within the angle of peripheral vision. There will not be any rigid projections on the interior of the helmet, and any projections on the exterior will not protrude more than 0.20 inches and are limited to those required for the successful operation of necessary accessories. All helmets are to be clearly and permanently labeled with the manufacturer's name, precise model number, size and month and year of manufacture. This label can be placed on the inside of the helmet, but not in a manner that would require the alteration of the helmet to view. The symbol "DOT" is required to be placed on the exterior back of the helmet, clearly visible.

    DOT Testing Procedure for a Helmet

    • The DOT requires that all helmets pass a rigorous testing process before deeming the helmet "DOT Approved." The impact attenuation test includes dropping the helmet onto both a round and flat anvil, to test its resistance to impact on four sides. The height for the rounded anvil drop is 17 feet 1 inch, and the height for the flat anvil drop is 19 feet 7 inches. The monorail test attaches the helmet to a fixed object and accelerates the object to an impact zone. The penetration test drops a 6-lb. 10-oz. striker point onto the helmet from a height of 118.1 inches. This test is conducted twice with the points being at least 3 inches apart and 3 inches from the impact attenuation test zone. The retention system test includes affixing the helmet to a stationary test head form and applying static tensile at first 50 and then 250 lbs.

    Additional Requirements for Motocross Helmets

    • All helmets used in Motocross must pass DOT testing. Because Motocross is an extreme sport, other factors have to be considered. The weight of the helmet is important, where lighter is better, and so Motocross helmets are built using a lightweight composite polycarbonate shell. Some are even built using a Kevlar composite for added protection. A ventilation system is also required for Motocross helmets as sweat and overheating can cause serious risk to the rider. In addition, Motocross helmets should have a lined chin bar, vented roost guard and a padded chin strap.

    Helpful Information

    • Competitive Motocross racers should check with race officials to determine if the course being raced will require a face shield. If there is any question as to the safety of a helmet or the validity of the "DOT" sticker on the back of a helmet, it is always best to take it to the local police department and have it inspected.