The Wisconsin Avenue Line, designated as Routes 31 or 33, is a daily bus route operated by the Washington Metropolitan Area Transit Authority. Its main purpose is to provide service to the upper Northwest side via Wisconsin Avenue NW.

Friendship Heights station is a Washington Metro station on the Red Line straddling the border of Washington, D.C., and Montgomery County, Maryland, United States. The station was opened on August 25, 1984, and is operated by the Washington Metropolitan Area Transit Authority (WMATA).