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Standard

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

2023-11-30

WIP

J2963

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

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

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 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 Force Distribution Performance Guide - Truck and Bus

2022-07-26

CURRENT

J1854_202207

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 4536 kg (10000 pounds) designed to be used on the highway in combination with other air-braked vehicles of this type in commercial operations.

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).

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Truck and Bus Grade Parking Performance Test Procedure

2020-08-19

CURRENT

J360_202008

This SAE Recommended Practice establishes methods to determine grade parking performance with respect to: a. Ability of the parking brake system to lock the braked wheels. b. The vehicle holding or sliding on the grade, fully loaded or unloaded. c. Applied manual effort. d. Unburnished or burnished brake lining friction conditions. e. Down and up grade directions.

Standard

Parking Brake Drawbar Pull Test Procedure - Truck and Bus

2019-10-17

CURRENT

J1729_201910

This SAE Recommended Practice provides a test method and instructions for measuring performance of parking brakes on air- or hydraulic-braked vehicles equipped with in-wheel or drive-line parking brakes. This procedure applies to truck-tractors, trailers, trucks, and buses.

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Antilock Brake Systems Energy Consumption Test Procedure for Air-Brake-Equipped Truck Tractors, Buses, Trailers, and Dollies

2019-10-07

CURRENT

J2255_201910

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

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

Trailer Grade Parking Performance Test Procedure

2018-11-12

CURRENT

J1452_201811

This SAE Recommended Practice establishes methods to determine grade parking performance with respect to: a Ability of the parking brake system to lock the braked wheels. b The trailer holding or sliding on the grade, fully loaded, or unloaded. c Applied manual effort. d Unburnished or burnished brake lining friction conditions. e Down and upgrade directions.

Standard

Truck and Bus Grade Parking Performance Requirements

2017-06-05

CURRENT

J293_201706

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

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

2017-01-05

HISTORICAL

J1626/2_201701

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.

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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 Force Distribution Performance Guide - Truck and Bus

2013-09-04

HISTORICAL

J1854_201309

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 4536 kg (10 000 lb) designed to be used on the highway in combination with other air-braked vehicles of this type in commercial operations.

Standard

Drawbar Pull Performance Criteria

2012-05-24

CURRENT

J2503_201205

This SAE Performance Criteria code applies to vehicles that are tested in accordance with SAE J1729 and SAE J1626.

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

2012-05-23

CURRENT

J1626_201205

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

Anti-Lock Brake System (ABS) Road Test Evaluation Procedure for Trucks, Truck-Tractors and Buses

2011-11-09

HISTORICAL

J2536_201111

Test procedure for Anti-Lock brake system (ABS/Anti-Lock) performance for trucks, truck-tractors and buses over 4536 kg (10 000 lb).

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 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.