EO 13150 Federal Workforce Transportation  

Under this Executive Order, federal agencies shall implement a transportation fringe benefit program that offers qualified Federal employees the option to exclude from taxable wages and compensation, consistent with section 132 of title 26, United States Code, employee commuting costs incurred through the use of mass transportation and vanpools, not to exceed the maximum level allowed by law (26 U.S.C. 132 (f)(2)).

For additional information, see the National Archives and Records Administration