The
Bangkok Mass Transit System, commonly known as the
BTS or the
Skytrain (
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 serves 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 . The system is formally known as
the Elevated Train in Commemoration of HM the King's 6th Cycle Birthday .