Regulations last checked for updates: Jun 20, 2026

Title 49 - Transportation last revised: Jun 17, 2026
All TitlesTitle 49Chapter IIPart 299Appendix Appendix B - Appendix B to Part 299—Cab Noise Test Protocol
Collapse to view onlyAppendix Appendix B - Appendix B to Part 299—Cab Noise Test Protocol
Table of Contents

authority: 49 U.S.C. 20103,20107,20133,20141,20302,20306,20701,21301,21304; 28 U.S.C. 2461,note; and 49 CFR 1.89
source: 85 FR 69731, Nov. 3, 2020, unless otherwise noted.
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