This practice establishes minimum performance requirements for trucks, buses, truck-tractors, full trailers and semitrailers with gross vehicle weight ratings greater than 10 000 lb (4500 kg) with regard to:
SAE J293-1988 history
2017SAE J293-2017 Truck and Bus Grade Parking Performance Requirements
2010SAE J293-2010 Truck and Bus Grade Parking Performance Requirements
2004SAE J293-2004 Truck and Bus Grade Parking Performance Requirements