Laws and Regulations
The transportation planning provisions of Title 23 and Title 49 of United States Code (23 USC Sections 134 and 135; 49 USC Sections 5303-5306), and the air quality provisions of the Clean Air Act as amended (42 USC Sections 7401-7671q) establish the major connection between transportation planning and emission reductions from transportation sources. Regulations governing transportation conformity are found in Title 40 of the Code of Federal Regulations (40 CFR Parts 51 and 93), and are closely linked with the joint FHWA/FTA transportation planning regulations found in 23 CFR Part 450.
- Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users (SAFETEA-LU). See Section 6011.
- Clean Air Act Section 176 (42 USC 7506)
- Title 40 Code of Federal Regulations Part 51
- Title 40 Code of Federal Regulations Part 93
- Title 23 Code of Federal Regulations Part 450
- Title 23 United States Code Part 134 - Metropolitan Planning
- Title 23 United States Code Part 135 - Statewide Planning
- Title 49 United States Code Part 53 - Mass Transportation
Transportation Conformity Rule
Trasnportation Conformity Rulemakings
