The Roaring Fork Transportation Authority has been in operation since 1983, and is operated by a Rural Transportation Authority. The RTA includes the communities of Aspen, Snowmass Village, Pitkin County, Basalt, a portion of Eagle County, Carbondale and Glenwood Springs. RFTA provides commuter bus service from Aspen to Glenwood Springs, New Castle, Silt and Rifle, inner city service in Aspen and Glenwood Springs, ski shuttle service to the four Aspen Skiing Company ski areas, Maroon Bells Guided Bus Tours, Paratransit and a variety of other seasonal services. In 1996, RFTA was named the "Best Mass Transit System of North America" by Mass Transit Magazine.

All points in Aspen can be reached using the RFTA bus system. Most routes are free. The city routes include: Hunter Creek, Cemetery Lane, Castle/Maroon, Mountain Valley Dial-A-Ride, Maroon Creek Road Direct, Galena Street Shuttle and Cross-town Shuttle

Most routes begin and end at Rubey Park Transportation Center on Durant Street about one block from the Silver Queen Gondola in downtown Aspen.

For bus information call Rubey Park Transit Center (970) 925-8484