The median of the Dulles Airport Access Road has long been considered a potential transit corridor to connect Dulles Airport with the rest of the Washington metropolitan area. KPMG Peat Marwick was engaged by Fairfax County, Virginia, to examine the feasibility of transit development in the corridor. The study examined a variety of transit options including express bus, high occupancy vehicle facilities, and various rail technologies. Station locations, ridership estimates, operating costs, and capital costs were prepared for each alternative. Based on the results of the analysis, it was recommended that the county implement an enhanced express bus system utilizing the high level of service provided by the Dulles Access Road, with station sites identified for interim use for express bus operation and potential ultimate conversion to a rail or other higher technology when operational and financial conditions warrant such action.