The Bangkok Mass Transit System, commonly known as the BTS or the Skytrain (Thai: รถไฟฟ้า rot fai fa), is an elevated rapid transit system in Bangkok, Thailand. It is operated by Bangkok Mass Transit System Public Company Limited (BTSC) under a concession granted by the Bangkok Metropolitan Administration (BMA). The system consists of 34 stations along two lines: the Sukhumvit Line running northwards and eastwards, terminating at Mo Chit and Bearing respectively, and the Silom Line which plies Silom and Sathon Roads, the Central Business District of Bangkok, terminating at the National Stadium and Bang Wa. The lines interchange at Siam Station and have a combined route length of 36.45 kilometers (22.65 mi).