It started operating in 1974 as an experimental service, originating from the central business district of Pikesville, and terminating at UMBC.

For a brief period in 1966, a shuttle service identified as Route 35 operated between UMBC and Catonsville Community College.

Within the decades that followed, the line performed above expectations, drawing riders from far beyond the college crowd and proving that a cross-county (suburb-to-suburb) bus route could succeed in the Baltimore area.

Some trips operated along the old route to Pikesville during a period of time when Old Court Station was closed at night.

[4] In 1995, selected trips were extended south of UMBC to the Patapsco Light Rail Stop through the Halethorpe area, improving connections.