U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

All TitlesTitle 23Chapter IPart 658 - PART 658—TRUCK SIZE AND WEIGHT, ROUTE DESIGNATIONS—LENGTH, WIDTH AND WEIGHT LIMITATIONS
§ 658.1 - Purpose.
§ 658.3 - Policy statement.
§ 658.5 - Definitions.
§ 658.7 - Applicability.
§ 658.9 - National Network criteria.
§ 658.11 - Additions, deletions, exceptions, and restrictions.
§ 658.13 - Length.
§ 658.15 - Width.
§ 658.16 - Exclusions from length and width determinations.
§ 658.17 - Weight.
§ 658.19 - Reasonable access.
§ 658.21 - Identification of National Network.
§ 658.23 - LCV freeze; cargo-carrying unit freeze.
Appendix Appendix A - Appendix A to Part 658—National Network—Federally-Designated Routes
Appendix Appendix B - Appendix B to Part 658—Grandfathered Semitrailer Lengths
Appendix Appendix C - Appendix C to Part 658—Trucks Over 80,000 Pounds on the Interstate System and Trucks Over STAA Lengths on the National Network
Appendix Appendix D - Appendix D to Part 658—Devices That Are Excluded From Measurement of the Length or Width of a Commercial Motor Vehicle
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