Bangkok is the only city that has a system which consists of the arsenalna 3 BTS system. MRT Suvarnabhumi airport and railway. In the future there may be almost 400 kilometers in length, area and perimeter.
Bangkok Is the only city with a metro system. The system is composed of three BTS Skytrain. MRT and Airport Rail Link in the future. May have a length of nearly 400 kilometers in the Bangkok area.