Congestion Relief and Clean Air Act of 1991

[AI summary unavailable — showing source text] Congestion Relief and Clean Air Act of 1991 - Establishes a strategic urbanized program (SUP) to fund projects: (1) on Federal-aid systems located in urbanized areas with 50,000 population or more; and (2) to plan, acquire, construct, and improve facilities, equipment, and associated capital maintenance items for use in mass transportation service in such areas. Specifies that such projects shall be designed to help reduce traffic congestion and traffic flow problems in such areas and may include projects to improve the condition, physical capacity, efficiency, or management of the Federal-aid systems. Requires the Secretary of Transportation, on October 1 of each fiscal year (and after making specified set-asides for discretionary and other projects), to apportion the remainder of the sums authorized under this Act in the ratio which the population in urbanized areas with 50,000 population or more bears to the total population in such areas in all States, as shown by the latest available Federal census. Specifies that no State shall receive less than one-half of one percent of each year's apportionment. Sets forth requirements and formulas for the expenditure of funds by the State…