2 U.S. Code § 2163
2 U.S. Code § 2163 is about Capitol Grounds shuttle service. It is under Subchapter VII (Other Entities and Services) of Chapter 30 (Operation and Maintenance of Capitol Complex) of Title 2 (The Congress) of the Code.
Funds appropriated for any available account of the Architect of the Capitol after October 1, 1976, shall be available for the purchase or rental, maintenance and operation of passenger motor vehicles to provide shuttle service for Members and employees of Congress to and from the buildings in the Legislative group.