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DOT - 49 CFR 571 121

Standard No. 121; Air brake systems

active, Most Current
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Organization: DOT
Publication Date: 1 October 2019
Status: active
Page Count: 23
scope:

This standard establishes performance and equipment requirements for braking systems on vehicles equipped with air brake systems.

Purpose.

The purpose of this standard is to insure safe braking performance under normal and emergency conditions.

Document History

October 1, 2022
Standard No. 121; Air brake systems
This standard establishes performance and equipment requirements for braking systems on vehicles equipped with air brake systems. Purpose. The purpose of this standard is to insure safe braking...
October 1, 2021
Standard No. 121; Air brake systems.
This standard establishes performance and equipment requirements for braking systems on vehicles equipped with air brake systems. Purpose. The purpose of this standard is to insure safe braking...
October 1, 2020
Standard No. 121; Air brake systems.
This standard establishes performance and equipment requirements for braking systems on vehicles equipped with air brake systems. Purpose. The purpose of this standard is to insure safe braking...
49 CFR 571 121
October 1, 2019
Standard No. 121; Air brake systems
This standard establishes performance and equipment requirements for braking systems on vehicles equipped with air brake systems. Purpose. The purpose of this standard is to insure safe braking...
October 1, 2018
Standard No. 121; Air brake systems
This standard establishes performance and equipment requirements for braking systems on vehicles equipped with air brake systems. Purpose. The purpose of this standard is to insure safe braking...
October 1, 2017
Standard No. 121; Air brake systems
This standard establishes performance and equipment requirements for braking systems on vehicles equipped with air brake systems. Purpose. The purpose of this standard is to insure safe braking...
October 1, 2016
Standard No. 121; Air brake systems
This standard establishes performance and equipment requirements for braking systems on vehicles equipped with air brake systems. Purpose. The purpose of this standard is to insure safe braking...
October 1, 2015
Standard No. 121; Air brake systems
This standard establishes performance and equipment requirements for braking systems on vehicles equipped with air brake systems. Purpose. The purpose of this standard is to insure safe braking...
October 1, 2014
Standard No. 121; Air brake systems
This standard establishes performance and equipment requirements for braking systems on vehicles equipped with air brake systems. Purpose. The purpose of this standard is to insure safe braking...
October 1, 2013
Standard No. 121; Air brake systems
This standard establishes performance and equipment requirements for braking systems on vehicles equipped with air brake systems. Purpose. The purpose of this standard is to insure safe braking...
October 1, 2012
Standard No. 121; Air brake systems
This standard establishes performance and equipment requirements for braking systems on vehicles equipped with air brake systems. Purrpose. The purpose of this standard is to insure safe braking...
October 1, 2011
Standard No. 121; Air brake systems
This standard establishes performance and equipment requirements for braking systems on vehicles equipped with air brake systems. Purpose. The purpose of this standard is to insure safe braking...
October 1, 2010
Standard No. 121; Air brake systems
This standard establishes performance and equipment requirements for braking systems on vehicles equipped with air brake systems. Purpose. The purpose of this standard is to insure safe braking...
October 1, 2009
Standard No. 121; Air brake systems.
This standard establishes performance and equipment requirements for braking systems on vehicles equipped with air brake systems. Purpose. The purpose of this standard is to insure safe braking...

References

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