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

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

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.

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.

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.

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.

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.

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.

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