Code of Federal Regulations

  1. Title 23
  2. Chapter I
Title 23 Highways Part / Section
Chapter I Federal Highway Administration, Department of Transportation 1 – 999
Subchapter A General Management and Administration 1
Part 1 General 1.1 – 1.36
Subchapter B Payment Procedures 140 – 192
Part 140 Reimbursement 140.501 – 140.922
Part 172 Procurement, Management, and Administration of Engineering and Design Related Services 172.1 – 172.11
Part 180 Credit Assistance for Surface Transportation Projects 180.1
Part 190 Incentive Payments for Controlling Outdoor Advertising on the Interstate System 190.1 – 190.7
Part 192 Drug Offender's Driver's License Suspension 192.1 – 192.7
Subchapter C Civil Rights 200 – 230
Part 200 Title VI Program and Related Statutes—Implementation and Review Procedures 200.1 – 200.11
Part 230 External Programs 230.101 – 230.415
Subchapter D National Highway Institute 260
Part 260 Education and Training Programs 260.101 – 260.407
Subchapter E Planning and Research 420 – 490
Part 420 Planning and Research Program Administration 420.101 – 420.209
Part 450 Planning Assistance and Standards 450.100 – 450.340
Part 460 Public Road Mileage for Apportionment of Highway Safety Funds 460.1 – 460.3
Part 470 Highway Systems 470.101 – 470.115
Part 490 National Performance Management Measures 490.101 – 490.811
Subchapter F Transportation Infrastructure Management 500 – 515
Part 500 Management and Monitoring Systems 500.101 – 500.204
Part 505 Projects of National and Regional Significance Evaluation and Rating 505.1 – 505.17
Part 511 Real-Time System Management Information Program 511.301 – 511.315
Part 515 Asset Management Plans 515.1 – 515.19
Subchapter G Engineering and Traffic Operations 620 – 680
Part 620 Engineering 620.101 – 620.203
Part 625 Design Standards for Highways 625.1 – 625.4
Part 626 Pavement Policy 626.1 – 626.3
Part 627 Value Engineering 627.1 – 627.9
Part 630 Preconstruction Procedures 630.102 – 630.1110
Part 633 Required Contract Provisions 633.101 – 633.211
Part 635 Construction and Maintenance 635.101 – 635.606
Part 636 Design-Build Contracting 636.101 – 636.514
Part 637 Construction Inspection and Approval 637.201 – 637.209
Part 645 Utilities 645.101 – 645.309
Part 646 Railroads 646.101 – 646.220
Part 650 Bridges, Structures, and Hydraulics 650.101 – 650.809
Part 652 Part 652 [Reserved]
Part 655 Traffic Operations 655.601 – 655.607
Part 656 Carpool and Vanpool Projects 656.1 – 656.7
Part 657 Certification of Size and Weight Enforcement 657.1 – 657.21
Part 658 Truck Size and Weight, Route Designations—Length, Width and Weight Limitations 658.1 – 658.23
Part 660 Special Programs (Direct Federal) 660.101 – 660.519
Part 661 Tribal Transportation Facility Bridge Program (TTFBP) 661.1 – 661.57
Part 667 Periodic Evaluation of Facilities Repeatedly Requiring Repair and Reconstruction Due to Emergency Events 667.1 – 667.9
Part 668 Emergency Relief Program 668.101 – 668.215
Part 669 Enforcement of Heavy Vehicle Use Tax 669.1 – 669.21
Part 680 National Electric Vehicle Infrastructure Standards and Requirements 680.100 – 680.118
Subchapter H Right-of-Way and Environment 710 – 778
Part 710 Right-of-Way and Real Estate 710.101 – 710.709
Part 750 Highway Beautification 750.101 – 750.713
Part 751 Junkyard Control and Acquisition 751.1 – 751.25
Part 752 Landscape and Roadside Development 752.1 – 752.11
Part 771 Environmental Impact and Related Procedures 771.101 – 771.139
Part 772 Procedures for Abatement of Highway Traffic Noise and Construction Noise 772.1 – 772.19
Part 773 Surface Transportation Project Delivery Program Application Requirements and Termination 773.101 – 773.117
Part 774 Parks, Recreation Areas, Wildlife and Waterfowl Refuges, and Historic Sites (Section 4(f)) 774.1 – 774.17
Part 777 Mitigation of Impacts to Wetlands and Natural Habitat 777.1 – 777.11
Part 778 Pilot Program for Eliminating Duplication of Environmental Reviews 778.101 – 778.113
Subchapter I Public Transportation 810
Part 810 Mass Transit and Special Use Highway Projects 810.2 – 810.310
Subchapter J Highway Safety 924
Part 924 Highway Safety Improvement Program 924.1 – 924.17
Subchapter K Intelligent Transportation Systems 940 – 950
Part 940 Intelligent Transportation System Architecture and Standards 940.1 – 940.13
Part 950 Electronic Toll Collection 950.1 – 950.9
Subchapter L Federal Lands Highways 970 – 999
Part 970 National Park Service Management Systems 970.100 – 970.214
Part 971 Forest Service Management Systems 971.100 – 971.214
Part 972 Fish and Wildlife Service Management Systems 972.100 – 972.214
Part 973 Management Systems Pertaining to the Bureau of Indian Affairs and the Indian Reservation Roads Program 973.100 – 973.214
Parts 974-999 Parts 974-999 [Reserved]