What is the requirement for brakes on trailers over 10,000 pounds GVWR?

Trailers with a gross vehicle weight rating (GVWR) of over 10,000 pounds are required to have brakes on all wheels. This requirement is in place because heavier trailers need more effective braking systems to ensure safe stopping distances and to maintain control during operation. When a trailer is heavily loaded, the dynamics change significantly, making comprehensive braking essential to mitigate risks such as swaying or loss of control.

Having brakes on all wheels allows for even distribution of braking force, which reduces the likelihood of skidding and enhances overall stability while towing. Regulations are designed to account for the increased stopping distances that come with heavier weights. Therefore, the correct requirement aligns with safety guidelines designed to protect both the operator of the trailer and others on the road.

Brakes only on the front wheels would not provide adequate stopping power for a large, heavy trailer, and declaring brakes as optional would undermine safety for trailers exceeding this significant weight. Similarly, specifying a particular brake type, such as disc style only, is not an overarching requirement as there may be various acceptable brake designs that meet regulatory standards.