In Bangkok, the Skytrain is operated by Bangkok Mass Transit System Public Company Limited (BTSC) under a concession granted by the Bangkok Metropolitan Administration (BMA) but the investment for the structure and system were fully supported by BTSC.
The underground system is operated by Bangkok Metro Company Limited (BMCL), while whole project investments were shared by Mass Rapid Transit Authorities (MRTA) and BMCL, which all civil structures was provided by government sector and the system was provided by private sector (BMCL).