Regulations last checked for updates: Feb 10, 2026

Title 23 - Highways last revised: Jan 02, 2026
All TitlesTitle 23Chapter IPart 490Subpart E - Subpart E—National Performance Management Measures To Assess Performance of the National Highway System
authority: 23 U.S.C. 134,135,148; 49 CFR 1.85
source: 81 FR 13913, Mar. 15, 2016, unless otherwise noted.
cite as: 23 CFR 490.515
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