REX

Richmond Highway Express a.k.a. "REX", is a Limited-Stop bus line that operates between King Street and Old Town station and Fort Belvior along the Richmond Highway corridor in Fairfax County, Virginia. The current "REX" fleet consists of twelve 2006 Orion 07.501 (VII) CNG (2674–2685) buses painted in a blue-and-gold paint scheme, which operate out of the Four Mile Run division. REX began service on September 26, 2004, replacing parts of Route 9A (which now operates between Huntington station and The Pentagon). The original REX bus fleet consisted of twelve now-retired 2000 Orion 06.501 (VI) buses wrapped (but not painted) in blue-and-gold paint scheme before the aforementioned newest Orion 07.501 CNG buses arrived in 2006.