MetroExtra is a limited-stop service operated by the Washington Metropolitan Area Transit Authority, which operates on Metrobus lines that need extra service with faster trips. There are six MetroExtra routes with only two of them having daily service.
MetroExtra
The Veirs Mill Road Line, designated Route Q2, Q4, Q6, is a daily bus route operated by the Washington Metropolitan Area Transit Authority between Silver Spring station and Shady Grove station of the Red Line of the Washington Metro. The line operates every 16–30 minutes at all times at a combined frequency of 10 minutes during weekday peak-hours, 15 minutes during the weekday midday and weekends, and 30 minutes during the late nights. All trips roughly take 55–60 minutes. The line operates along the Veirs Mill Road corridor connecting passengers to various Metro stations and communities.
Route Q4 at Wheaton station
Route Q2 outside Wheaton station
Route Q6 at Wheaton station