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U.S Code last checked for updates: May 19, 2025
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Title 23
Chapter 1 [§ 101 - § 190] - FEDERAL-AID HIGHWAYS
Chapter 2 [§ 201 - § 219] - OTHER HIGHWAYS
Chapter 3 [§ 301 - § 332] - GENERAL PROVISIONS
Chapter 4 [§ 401 - § 412] - HIGHWAY SAFETY
Chapter 5 [§ 501 - § 520] - RESEARCH, TECHNOLOGY, AND EDUCATION
Chapter 6 [§ 601 - § 611] - INFRASTRUCTURE FINANCE
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