To amend the Urban Mass Transportation Act of 1964 to authorize appropriations for mass transportation programs, to amend the Internal Revenue Code of 1986 to provide for a 5-year extension of the Highway Trust Fund, and for other purposes.

[AI summary unavailable — showing source text] Title I: Public Transit Act of 1990 - Public Transit Act of 1990 - Amends the Urban Mass Transportation Act of 1964 to authorize appropriations through FY 1996 for specified mass transportation projects. Amends the Urban Mass Transportation Act of 1964 to allocate funds for FY 1992 through 1996 for: (1) rail modernization; (2) construction of new fixed guideway systems; (3) replacement, rehabilitation, and purchase of buses and bus-related facilities; and (4) other specified transportation projects. Title II: Highway Revenue Act of 1990 - Highway Revenue Act of 1990 - Amends the Internal Revenue Code to extend for a five-year period: (1) specified Highway Trust Fund taxes and related exemptions regarding transportation; and (2) the Highway Trust Fund. Amends the Land and Water Conservation Fund Act of 1965 to extend for a five-year period the transfer of certain gasoline taxes from the land and water conservation fund into the Treasury.…