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Standard

Brake Force Distribution Test Procedure - Trucks and Buses

2011-07-13
HISTORICAL
J1505_201107
This SAE Recommended Practice provides the test procedure and instructions for air braked single unit trucks, buses, and combination vehicles. It also provides recommendations for: a Instrumentation and equipment b Vehicle preparation c Calculating distribution of brake force
Standard

Brake System Rating Test Code - Commercial Vehicles

2023-01-09
CURRENT
J880_202301
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

BRAKE RATING SYSTEM TEST CODE - COMMERCIAL VEHICLES

1963-11-01
HISTORICAL
J880_196311
The code provides test procedures and instructions for: Instrumentation and equipment. Vehicle preparation. Determining brake system energy absorption capacity. Calculation of a brake rating. The code includes provision for those vehicles, single unit, combinations, or special, which cannot be loaded to the manufacturer's rated gross vehicle weight, cannot be accelerated in the time interval required, or cannot attain the specified 50 mph speed. Methods for measuring energy absorption capacity, other than described herein, may be equally valid.
Standard

BRAKE RATING SYSTEM TEST CODE – COMMERCIAL VEHICLES

1970-06-01
HISTORICAL
J880A_197006
This code is intended for vehicles with brake systems having typical service pressure ranges 0-1800 psi hydraulic or 0-120 psi air and is not directly applicable to vehicles with other systems.
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

BRAKE SYSTEM RATING TEST CODE—COMMERCIAL VEHICLES

1985-03-01
HISTORICAL
J880_198503
This code is intended for vehicles with brake systems having typical service pressure ranges 0–1800 psi (0–12.4 MPa) hydraulic or 0–120 psi (0–830 kPa) air and is not directly applicable to vehicles with other systems.
Standard

BRAKE SYSTEM RATING TEST CODE—COMMERCIAL VEHICLES

1997-02-01
HISTORICAL
J880_199702
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 120 psi) air and is not directly applicable to vehicles with other systems. Air over hydraulic systems are to be tested as air systems.
Standard

Brake Force Distribution Field Test Procedure for Truck and Bus

2022-10-07
CURRENT
J225_202210
This SAE Recommended Practice provides a field test procedure and instructions for air braked single unit trucks, buses, and combination vehicles. Brake force distribution field testing with systems post-reduce stopping distance changes is still appropriate, however, vehicles with electronically 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 Test of air-braked single and combination vehicles. d Calculation of brake force distribution. e This test procedure is intended to be used as a field procedure. If a more refined method, utilizing laboratory equipment, is required, refer to SAE J1505.
Standard

BRAKE SYSTEM TORQUE BALANCE TEST CODE COMMERCIAL VEHICLE

1993-06-10
HISTORICAL
J225_199306
This SAE Recommended Practice provides a field test procedure and instructions for: a Instrumentation and Equipment b Vehicle Preparation c Test of air-braked single and combination vehicles d Calculation of brake force distribution e This test procedure is intended to be used as a field procedure. If a more refined method, utilizing laboratory equipment, is required, refer to SAE J1505.
Standard

Brake Rating Power Requirements—Truck and Bus

2011-08-04
HISTORICAL
J257_201108
The minimum performance values in this SAE Recommended Practice are applicable to vehicles with brake systems having typical service pressure ranges 0 to 16.6 MPa (0 to 2400 psi) hydraulic or 0 to 945 kPa (0 to 135 psi) air only. SAE J880 not only provides for determining maximum brake rating power capability, but also permits verification of any desired or arbitrary level such as the requirement established herein. The determining criteria for deciding brake rating power capability are: a Cold brake stopping ability. b Fade as a result of brake power absorption. c Hot brake stopping ability following brake power absorption. d Brake system stability following brake power absorption. e Functional and structural integrity of brake system following test.
Standard

Brake Rating Power Requirements - Truck and Bus

2019-07-18
CURRENT
J257_201907
The minimum performance values in this SAE Recommended Practice are applicable to vehicles with brake systems having typical service pressure ranges 0 to 16.6 MPa (0 to 2400 psi) hydraulic or 0 to 945 kPa (0 to 135 psi) air only. SAE J880 not only provides for determining maximum brake rating power capability, but also permits verification of any desired or arbitrary level such as the requirement established herein. The determining criteria for deciding brake rating power capability are: a. Cold brake stopping ability. b. Fade as a result of brake power absorption. c. Hot brake stopping ability following brake power absorption. d. Brake system stability following brake power absorption. e. Functional and structural integrity of brake system following test.
Standard

BRAKE RATING HORSEPOWER REQUIREMENTS—COMMERCIAL VEHICLES

1997-02-01
HISTORICAL
J257_199702
The minimum performance values in this SAE Recommended Practice are applicable to vehicles 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 120 psi) air only. SAE J880 not only provides for determining maximum brake rating horsepower capability, but also permits verification of any desired or arbitrary level such as the requirement established herein. The determining criteria for deciding brake rating horsepower capability are: a Cold brake stopping ability. b Fade as a result of horsepower absorption. c Hot brake stopping ability following horsepower absorption. d Brake system stability following horsepower absorption. e Functional and structural integrity of brake system following test.
Standard

BRAKE RATING HORSEPOWER REQUIREMENTS—COMMERCIAL VEHICLES

1985-03-01
HISTORICAL
J257_198503
The minimum performance values in this recommended practice are applicable to vehicles with brake systems having typical service pressure ranges 0-1800 psi (0-12.4 MPa) hydraulic or 0-120 psi (0-0.8 MPa) air only. SAE J880 not only provides for determining maximum brake rating horsepower capability, but also permits verification of any desired or arbitrary level such as the requirement established herein. The determining criteria for deciding brake rating horsepower capability are: (a) Cold brake stopping ability. (b) Fade as a result of horsepower absorption. (c) Hot brake stopping ability following horsepower absorption. (d) Brake system stability following horsepower absorption. (e) Functional and structural integrity of brake system following test.
Standard

BRAKE FORCE DISTRIBUTION PERFORMANCE GUIDE—COMMERCIAL VEHICLES

1995-04-01
HISTORICAL
J1854_199504
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.
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