This SAE Recommended Practice establishes a uniform procedure for the level road test of the brake systems of all combinations of new multi-purpose passenger vehicles, new light-duty trucks up to and including 10 000 lb (4500 kg) GVW and new passenger cars when coupled with new trailers (braked or unbraked).
SAE J134C-1979 history
2013SAE J134-2013 Brake System Road Test Code Passenger Car and Light Duty truck-Trailer Combinations
1993SAE J134-1993 Brake System Road Test Code Passenger Car and Light Duty truck-Trailer Combinations
1985SAE J134-1985 BRAKE SYSTEM ROAD TEST CODE—PASSENGER CAR AND LIGHT DUTY TRUCK-TRAILER COMBINATIONS
1979SAE J134C-1979 BRAKE SYSTEM ROAD TEST CODE—PASSENGER CAR AND LIGHT DUTY TRUCK-TRAILER COMBINATIONS
1979SAE J134-1979 Brake System Road Test Code - Passenger Car and Light Duty Truck-Trailer Combinations
1975SAE J134B-1975 BRAKE SYSTEM ROAD TEST CODE — PASSENGER CAR AND LIGHT DUTY TRUCK — TRAILER COMBINATIONS
1973SAE J134A-1973 BRAKE SYSTEM ROAD TEST CODE—PASSENGER CAR—TRAILER COMBINATIONS
1970SAE J134-1970 BRAKE SYSTEM ROAD TEST CODE - PASSENGER CAR - TRAILER COMBINATIONS