SERVICE BRAKE STRUCTURAL INTEGRITY REQUIREMENTS—VEHICLES OVER 10 000 LB (4500 KG) GVWR
This SAE Recommended Practice presents requirements for the structural integrity of the brake system of all new trucks, buses, and combination of vehicles designed for roadway use and falling into the following classifications:
Truck and Bus: Over 10 000 lb (4500 kg) GVWR.
Combination of Vehicles: Towing vehicle over 10 000 lb (4500 kg) GVWR.
The requirements are based on data obtained from SAE Recommended Practice J294.