The Beige Line is an automated guideway transit (AGT) system operated by Bay Area Rapid Transit (BART) between BART's Coliseum station and Oakland International Airport station. The system opened for revenue service on November 22, 2014 and is integrated into BART's fare system. During planning and construction, it was known as the Oakland Airport Connector (OAC) project. The line replaced the former AirBART shuttle bus service. Initially operating between two terminal stations, the system includes provisions for an intermediate third station (Doolittle Station) that may be built at a later date. Operations The Coliseum–Oakland International Airport AGT system is operated by BART and is integrated into BART's existing fare system. However, it does not utilize existing BART rolling stock and it is not physically connected with existing BART tracks. Instead it has its own fleet of AGT vehicles that operate on fixed guideways and are cable-drawn. The guideways and Cable Liner vehicles were built by Doppelmayr Cable Car. The line is designed to have an approximate headway of 4.5 minutes (though it is currently operated with a headway of 6 minutes) and to complete a one-way trip in approximately 8 minutes, with an on-time performance of more than 99.5%. The initial setup is four 3-car trains (113 passengers each train), but the system can accommodate an expansion to four 4-car trains (148 passengers each train).The system has four cable loops and one train per cable. The system uses a pinched-loop configuration, with two lines that merge into a single track just before each terminus. Cars switch cables during dwell time at the station. The trains automatically switch cables four times: once at each end, and halfway between the two stops at the wheelhouse, near the intersection of Hegenberger Road and Airport Access Road. The wheelhouse has four drive wheels that move the cables. The AGT route between Oakland Coliseum Station and the airport is mostly elevated, largely in the median of Hegenberger Road, with one underground section as it passes under Doolittle Drive, and one at-grade section just west of that point, before the AGT enters airport property on an elevated guideway. A maintenance and storage facility is located near the midpoint of the system. A two-person team monitors operation of the system from a central control room in the Doolittle Maintenance and Storage Facility. The Airport station's fare gates are located at Coliseum station, between the line's dedicated platform