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Standard

Recommended Practice for Braking, Stability, and Control Performance Test Procedure for Air-Brake-Equipped Trucks and Buses

2023-04-21

CURRENT

J1626/2_202304

This Recommended Practice provides a road test procedure for trucks and buses, to evaluate their compliance with Federal Motor Vehicle Safety Standard (FMVSS) 121; Air Brake Systems. Units of measure are English in lieu of metric to be consistent with FMVSS 121.

Standard

Recommended Practice for Braking, Stability, and Control Performance Test Procedure for Air Brake-Equipped Truck-Tractors

2023-03-23

CURRENT

J1626/1_202303

This SAE Recommended Practice provides a road test procedure for truck-tractors, to evaluate their compliance with Federal Motor Vehicle Safety Standard (FMVSS) 121. Units of measure are English in lieu of metric to be consistent with FMVSS 121.

Standard

Brake Force Distribution Test Procedure - Trucks and Buses

2022-10-26

CURRENT

J1505_202210

This SAE Recommended Practice provides the test procedure and instructions for air braked single unit trucks, buses, and combination vehicles. Brake force distribution testing with systems post-reduced stopping distance changes is still appropriate; however, vehicles with electrononically controlled braking systems are not covered in this document and may need to be addressed in the future. It also provides recommendations for: a Instrumentation and equipment. b Vehicle preparation. c Calculating distribution of brake force.

Standard

Braking System Definitions - Truck and Bus

2022-07-06

CURRENT

J2627_202207

This SAE Recommended Practice identifies and defines terms specifically related to truck and bus braking systems including Antilock Brake Systems (ABS) and Electronically Controlled Braking Systems (ECBS).

Standard

Summary of Stop Lamp-Related Federal Motor Vehicle Safety Standards and NHTSA Interpretations, Relative to ATC, Stability Control Interventions, Engine Retarders/Exhaust Brakes

2018-10-02

CURRENT

J2963_201810

Provide previous stop light activation research into single document for future reference. Relevant documents and interpretations noted in Table 1.

Standard

Heavy Vehicle Controls Prioritization and Conflict Resolution

2015-04-10

HISTORICAL

J3081_201504

This document is written to address acceleration and deceleration control issues related to Heavy Duty Trucks and Buses greater than 10 000 GVW.

Standard

Brake System Rating Test Code - Commercial Vehicles

2011-10-05

HISTORICAL

J880_201110

This code is intended for commercial vehicles over 4500 kg (10 000 lb) with brake systems having typical service pressure ranges 0 to 14.1 mPa (0 to 2050 psi) hydraulic or 0 to 830 kPa (0 to 130 psi) air and is not directly applicable to vehicles with other systems. Air over hydraulic systems are to be tested as air systems.

Standard

Test Procedure for Trailer Air Reservoir Fill and Parking Brake Release Times

2010-08-18

HISTORICAL

J2378_201008

This SAE Recommended Practice provides instructions and test procedures for air braked trailers and dollies used in single and multiple trailer combinations on highway. This document is not intended for off-highway application.

Standard

Test Procedure for Air Supply of Truck-Tractors and Towing Trucks

2009-05-07

HISTORICAL

J2377_200905

This SAE Recommended Practice (RP) provides test procedures for air braked trucks and truck-tractors used to tow single and multiple trailer combinations on highways. This RP is not intended for off-highway applications.

Standard

Test Procedure for Trailer Air Reservoir Fill and Parking Brake Release Times

2003-07-07

HISTORICAL

J2378_200307

This SAE Recommended Practice provides instructions and test procedures for air braked trailers and dollies used in single and multiple trailer combinations on highway. This document is not intended for off-highway application.

Standard

Braking, Stability, and Control Performance Test Procedures for Air- and Hydraulic-Brake-Equipped Trucks, Truck-Tractors and Buses

1999-06-29

HISTORICAL

J1626_199906

This SAE Recommended Practice provides a road test procedure for trucks, truck-tractors, and buses to evaluate their compliance with Federal Motor Vehicle Safety Standards (FMVSS) 105 and 121; Hydraulic and Air Brake Systems. Units of measure are English in lieu of metric to be commensurate with FMVSS 105 and 121.

Standard

ANTILOCK BRAKE SYSTEMS ENERGY CONSUMPTION TEST PROCEDURE FOR AIR-BRAKED-EQUIPPED TRUCK TRACTORS, BUSES, TRAILERS, AND DOLLIES

1996-05-01

HISTORICAL

J2255_199605

This SAE Recommended Practice provides instructions and test procedures for measuring air consumption of air braked vehicles equipped with Antilock Brake Systems (ABS) used on highways.

Standard

VEHICLE GRADE PARKING PERFORMANCE REQUIREMENTS

1995-09-01

HISTORICAL

J293_199509

This SAE Recommended Practice establishes minimum performance requirements for trucks, buses, truck-tractors, full trailers, and semitrailers with gross vehicle weight ratings greater than 4540 kg (10 000 lb) with regard to: a Vehicle classification b Vehicle load c Percent grade d Application force

Standard

IN-SERVICE BRAKE PERFORMANCE TEST PROCEDURE—VEHICLES OVER 4500 kg (10 000 lb)

1992-11-01

HISTORICAL

J1250_199211

This SAE Recommended Practice establishes a uniform practical series of subprocedures for level road testing of the brake performance of vehicles with gross vehicle weight ratings over 4500 kg (10 000 lb).

Standard

VEHICLE GRADE PARKING PERFORMANCE REQUIREMENTS

1988-10-01

HISTORICAL

J293_198810

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:

Standard

BRAKE FORCE/DISTRIBUTION PERFORMANCE GUIDE - COMMERCIAL VEHICLES

1988-06-01

HISTORICAL

J1854_198806

This SAE Recommended Practice establishes performance guidelines for the threshold pressure and brake force output of the brakes on the axles of air braked towing trucks, truck-tractors, truck-trailers, and converter dollies with GVWRs over 10 000 lb designed to be used on the highway in combination with other air braked vehicles of this type in commercial operations.

Standard

BRAKE FORCE DISTRIBUTION TEST CODE—COMMERCIAL VEHICLES

1985-05-01

HISTORICAL

J1505_198505

This code provides the test procedure and instructions for air braked combination vehicles. It also provides recommendations for:

Standard

BRAKE SYSTEM PERFORMANCE REQUIREMENTS—TRUCK, BUS, AND COMBINATION OF VEHICLES

1985-03-01

HISTORICAL

J992_198503

This SAE Recommended Practice presents performance requirements for the brake systems of motor vehicles intended for roadway use and falling into the following classifications: Light trucks and buses: 6001–10 000 lb (2700–4500 kg) gvw Truck and bus: Over 10 000 lb (4500 kg) gvw Combination of vehicles [towing vehicle over 10 000 lb (4500 kg) gvw] Acceptable performance requirements are based on data obtained from applicable sections of SAE J786a (March, 1978).

Standard

IN-SERVICE BRAKE PERFORMANCE TEST PROCEDURE—VEHICLES OVER 4500 kg (10 000 lb)

1980-02-01

HISTORICAL

J1250_198002

This SAE Recommended Practice establishes a uniform practical series of sub-procedures for level road testing of the brake performance of vehicles with gross vehicle weight ratings over 4500 kg (10 000 lb).

Standard

BRAKE SYSTEM ROAD TEST CODE—TRUCK, BUS, AND COMBINATION OF VEHICLES

1978-03-01

HISTORICAL

J786A_197803

This SAE Recommended Practice establishes a uniform procedure for the level road test of the brake systems of new trucks, buses, and combination of vehicles designed for roadway use and falling in the following classifications: Light trucks and buses: 6001-10,000 lb (2700-4500 kg) gvw Truck and bus: Over 10,000lb (4500 kg) gvw Combination of vehicles (towing vehicle over 10,000 lb (4500 kg) gvw)