Surface Transportation Assistance Act

Surface Transportation Assistance Act - Title I: Federal Aid Highway Act - Amends the Federal-Aid Highway Act of 1956 to revise and extend the authorization for appropriations for the Interstate Highway System through fiscal year 1992. Directs the Secretary of Transportation to apportion such amounts in a specified manner for fiscal year 1980.

Authorizes appropriations through fiscal year 1982 for specified highway programs.

Stipulates that the Federal share of railroad-highway crossing demonstration projects under the Federal-Aid Highway Act of 1973 shall be 95 percent of the cost of such a project.

Authorizes the Secretary of Transportation to make grants to States for traffic control signalization projects designed to conserve motor fuel and decrease traffic congestion.

Sets forth the Federal Share of such programs and the method by which such amounts are to be apportioned.

Increases the Federal share for specified highway programs.

Directs the Secretary to allocate funds made available for pavement marking demonstration programs in a manner deemed by the Secretary most appropriate to expedite the completion of pavement markings on all highways.

Authorizes the reapportionment of funds not used by a State for the Interstate System to another State which has obligated all of its apportionment.

Sets forth restrictions on the Secretary's authority to withdraw approval for the construction of routes on the Interstate System.

Amends the Appalachian Regional Development Act of 1965 to increase the Federal share for construction projects on the Appalachian development highway system.

Authorizes the Secretary to carry out access control demonstration projects designed to demonstrate whether preserving the capacity of existing highways to move traffic safely by acquiring and controlling the right of access to such highways is a cost effective alternative to the construction of new highways. Authorizes appropriations for such purpose through fiscal year 1982 out of the Highway Trust Fund.

Title II: Highway Safety Act - Authorizes appropriations through fiscal year 1982 for specified highway safety programs.

Amends the Highway Safety Act of 1973 to authorize appropriations through fiscal year 1982 for projects to eliminate hazards relating to rail-highway crossings.

Title III: Urban Mass Transportation Act Amendments - Amends the Urban Mass Transportation Act of 1964 to authorize appropriations through 1982 for specified projects under such Act. Authorizes general appropriations to carry out the provisions of such Act through fiscal year 1988.