The Benning Road–H Street Limited Line, designated Route X9, is a limited stop MetroExtra bus route operated by the Washington Metropolitan Area Transit Authority between Capitol Heights station, which is served by the Blue and Silver lines of the Washington Metro, and Metro Center station, which is served by the Red, Blue, Orange, and Silver lines of the Washington Metro. The line operates every 15-16 minutes at all times on weekdays only. Trips are roughly 50 minutes long. During weekday midday, Route X9 is shortened to operate to Minnesota Avenue station. This line provides additional service along the H Street corridor supplementing routes X1, X2 and X3.