Every four years, the Secretary of the U.S. Department of Transportation (DOT) must certify that each metropolitan planning organization (MPO) serving a transportation management area (TMA) – a designation by DOT of an urbanized area with a population over 200,000 as defined by the Bureau of the Census or smaller urbanized areas on request by the Governor and MPO – is carrying out the metropolitan planning process in adherence with federal statutes and regulations. FTA and FHWA conduct a review of the metropolitan planning process within each TMA and jointly issue this certification on behalf of the DOT Secretary, in accordance with 49 U.S.C. 5303(k).
23 CFR 450 - Planning Assistance and Standards - Federal transportation planning regulations (this link goes to the highway version--the transit version, adopted by FTA at 49 CFR 613, is an identical copy which incorporates this section by reference).
FTA Circular 8100.1D - Program Guidance for Metropolitan Planning and State Planning and Research Program Grants - FTA program guidance for metropolitan planning and state planning and research program grants.
FAST Act Fact Sheet: Metropolitan, Statewide, & Non-Metropolitan Planning - FTA Fact Sheet on the planning provisions in the Bipartisan Infrastructure Law.
FHWA FAST Act Fact Sheet: Metropolitan Planning - FHWA fact sheet on the metropolitan planning provisions of the FAST Act.
U.S. Code Title 49, Chapter 53 - Public Transportation - This is the public transportation section of U.S. Code. The Metropolitan Transportation Planning statute is found at Section 5303; Statewide Transportation Planning is found at Section 5304; and Planning Programs are found at Section 5305. The Metro and Statewide Planning sections are identical to the corresponding sections of Federal Highways code, 23 U.S.C. 134 and 135.
Additional resources related to Metropolitan, Statewide & Non-Metropolitan Planning