Regulations last checked for updates: Nov 23, 2025

Title 49 - Transportation last revised: Oct 09, 2025
Appendix Appendix I - Appendix I to Part 173—Calculation Method
[85 FR 27897, May 11, 2020]
authority: 49 U.S.C. 5101-5128,44701; 49 CFR 1.81, 1.96 and 1.97