Front Matter
*Title 1—General Provisions
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Title 2—The Congress
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*Title 3—The President
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*Title 4—Flag And Seal, Seat Of Government, And The States
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*Title 5—Government Organization And Employees; and Appendix
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Title 6—Domestic Security
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Title 7—Agriculture
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Title 8—Aliens And Nationality
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*Title 9—Arbitration
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*Title 10—Armed Forces
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*Title 11—Bankruptcy; and Appendix
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Title 12—Banks And Banking
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*Title 13—Census
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*Title 14—Coast Guard
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Title 15—Commerce And Trade
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Title 16—Conservation
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*Title 17—Copyrights
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*Title 18—Crimes And Criminal Procedure; and Appendix
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Title 19—Customs Duties
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Title 20—Education
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Title 21—Food And Drugs
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Title 22—Foreign Relations And Intercourse
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*Title 23—Highways
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TITLE 23—Front Matter
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CHAPTER 1—FEDERAL-AID HIGHWAYS (sections 101 to 190)
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CHAPTER 2—OTHER HIGHWAYS (sections 201 to 219)
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CHAPTER 3—GENERAL PROVISIONS (sections 301 to 332)
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CHAPTER 3—Front Matter
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Sec. 301. Freedom from tolls
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Sec. 302. State transportation department
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Sec. 303. Repealed. Pub. L. 112-141, div. A, title I, §1519(b)(1)(A), July 6, 2012, 126 Stat. 575
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Sec. 304. Participation by small business enterprises
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Sec. 305. Archeological and paleontological salvage
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Sec. 306. Mapping
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Sec. 307. Repealed. Pub. L. 105-178, title V, §5119(b), June 9, 1998, 112 Stat. 452
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Sec. 308. Cooperation with Federal and State agencies and foreign countries
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Sec. 309. Repealed. Pub. L. 112-141, div. A, title I, §1519(b)(1)(A), July 6, 2012, 126 Stat. 575
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Sec. 310. Civil defense
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Sec. 311. Highway improvements strategically important to the national defense
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Sec. 312. Detail of Army, Navy, and Air Force officers
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Sec. 313. Buy America
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Sec. 314. Relief of employees in hazardous work
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Sec. 315. Rules, regulations, and recommendations
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Sec. 316. Consent by United States to conveyance of property
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Sec. 317. Appropriation for highway purposes of lands or interests in lands owned by the United States
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Sec. 318. Highway relocation due to airport
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Sec. 319. Landscaping and scenic enhancement
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Sec. 320. Bridges on Federal dams
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Sec. 321. Signs identifying funding sources
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Sec. 322. Magnetic levitation transportation technology deployment program
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Sec. 323. Donations and credits
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Sec. 324. Prohibition of discrimination on the basis of sex
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Sec. 325. Repealed. Pub. L. 117-58, div. A, title I, §11525(r), Nov. 15, 2021, 135 Stat. 608
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Sec. 326. State assumption of responsibility for categorical exclusions
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Sec. 327. Surface transportation project delivery program
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Sec. 328. Eligibility for environmental restoration and pollution abatement
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Sec. 329. Eligibility for control of noxious weeds and aquatic noxious weeds and establishment of native species
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Sec. 330. Program for eliminating duplication of environmental reviews
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Sec. 331. Evaluation of projects within an operational right-of-way
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Sec. 332. Pollinator-friendly practices on roadsides and highway rights-of-way
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CHAPTER 4—HIGHWAY SAFETY (sections 401 to 412)
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CHAPTER 5—RESEARCH, TECHNOLOGY, AND EDUCATION (sections 501 to 520)
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CHAPTER 6—INFRASTRUCTURE FINANCE (sections 601 to 611)
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Title 24—Hospitals And Asylums
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Title 25—Indians
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Title 26—Internal Revenue Code
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Title 27—Intoxicating Liquors
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*Title 28—Judiciary And Judicial Procedure; and Appendix
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Title 29—Labor
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Title 30—Mineral Lands And Mining
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*Title 31—Money And Finance
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*Title 32—National Guard
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Title 33—Navigation And Navigable Waters
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Title 34—Crime Control And Law Enforcement
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*Title 35—Patents
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*Title 36—Patriotic And National Observances, Ceremonies, And Organizations
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*Title 37—Pay And Allowances Of The Uniformed Services
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*Title 38—Veterans' Benefits
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*Title 39—Postal Service
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*Title 40—Public Buildings, Property, And Works
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*Title 41—Public Contracts
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Title 42—The Public Health And Welfare
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Title 43—Public Lands
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*Title 44—Public Printing And Documents
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Title 45—Railroads
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*Title 46—Shipping
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Title 47—Telecommunications
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Title 48—Territories And Insular Possessions
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*Title 49—Transportation
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Title 50—War And National Defense; and Appendix
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*Title 51—National And Commercial Space Programs
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Title 52—Voting And Elections
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Title 53—[Reserved]
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*Title 54—National Park Service And Related Programs
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 Popular Names and Tables
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