The Annapolis Road Line, designated Route T18, is a daily bus route operated by the Washington Metropolitan Area Transit Authority between the New Carrollton station of the Orange Line of the Washington Metro and the Rhode Island Avenue–Brentwood station of the Red Line of the Washington Metro. The line operates every 12 minutes during the weekdays between 7AM and 9PM and 45-60 minutes after 9PM. T18 trips roughly take 50 minutes.