The Sibley Hospital–Stadium Armory Line, designated Route D6, is a daily bus route operated by the Washington Metropolitan Area Transit Authority between Stadium–Armory station of the Blue, Orange, and Silver Lines of the Washington Metro and Sibley Hospital in the Palisades neighborhood. The line operates every 15 minutes during the weekday peak hours, 20 minutes during the off-peak hours, and 30-40 minutes during the late nights. Route D6 trips are roughly 60-90 minutes long.