Blacksburg Transit, or simply BT, is a local government-owned urban-suburban bus line based in Blacksburg, Virginia. The system originated in 1983 with six buses, but has since expanded its operation to 53 fixed-route buses and 18 body-on-chassis vehicles. Ridership exceeds 4.6 million passenger trips per year; ridership is dominated by Virginia Tech students who account for approximately 90 percent of all riders, with the remaining percentage being split between Virginia Tech faculty and staff, and other Blacksburg citizens. Blacksburg Transit serves the towns of Blacksburg, Christiansburg and limited portions of Montgomery County.