Regulations last checked for updates: May 14, 2025

Title 23 - Highways last revised: Jan 01, 1900
All TitlesTitle 23Chapter IPart 500 - PART 500—MANAGEMENT AND MONITORING SYSTEMS
authority: 23 U.S.C. 134,135,303,and; 49 U.S.C. 5303-5305; 23 CFR 1.32; and 49 CFR 1.48 and 1.51
source: 61 FR 67170, Dec. 19, 1996, unless otherwise noted.
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