The present Bangkok mass transit system comprises two different types of metros: 1) the elevated BTS system, the so-called Skytrain - rot fai fah in Thai, and 2) the underground MRT subway. Although BTS and MRT use similar technology (trains, signalling & train control), there is no track connection between them. All MRT stations are equipped with platform-screen-doors, which does not apply to any BTS station.
Besides the mass transit rail systems, Water Buses provide a fast transport service on the Chao Phraya River; at present, transfer to the BTS system is only possible at Saphan Taksin station.
