The train services in Bangkok are available in central business areas.

BTS (Bangkok Transit System)

The skytrain BTS covers most of downtown and is especially convenient for visiting the Siam Square area. There are two lines:

1. The light green Sukhumvit line which travels along Sukhumvit road and then goes up Phayonyothin to northern Bangkok , where it terminates near the Chatuchak Weekend Market (N8).

2. the dark green Silom line which travels from the Silom area, interchanges with the Sukhumvit line at Siam Square and ends at National Stadium, right next to MBK shopping center.

You can change for 5 or 10 baht coins at the counter to purchase Skytrain tickets from the vending machines near the entrance. Fares range from 15 to 40 baht depending upon how many stops you are travelling. The price chart is next to the vending machine.

If you are in town for several days, weigh your options and consider a rechargable stored-value card (from 100 baht, with a 30-baht refundable deposit and a 30 baht non-refundable card cost, as of Nov 2007), a "ride all you like" tourist pass (from 120 baht/day) or a multiple ride pass of 10 trips or more. They will certainly save you time, scrambling for coins, and maybe even money. Check for information with the English speaking staff.

Four stations are fully accessible to wheelchair users, plus one station, On Nut is accessible only on the arrival side. The other fully accessible stations are Asok/Sukhumvit, Siam, Chong Nonsi and Mo Chit. To acceed to concourse level in these stations, you can use the lift - press the call button and an attendant will come and get you. At On Nut stations on the departures side, the attendant will help you also to get to platform level through the escalator since the elevator can be used only to get to interchange level. Many Stations in shopping zones are also accessible independently through the shopping centers or hotels.

MRT (Metropolitan Rapid Transit)

The metro train MRT reaches from the Northern train station of Bangsue to Hua Lumphong main railway station in a loop, connecting with the skytrain BTS on 3 different stations, Silom, Sukhumvit and Chatuchak Park. It operates from 05:00 am to midnight and leaves within 5 minutes in rush hours from 06.00-09.00 and 16.30-19.30 and within 10 minutes at the other hours.
Metro tickets are not interchangeable with BTS skytrain tickets. Rides cost from 15 to 41 baht depending on distance; pre-paid cards of up to 1000 baht are also available. For single ride fares, a round plastic token is used for scan at entrance barrier to get into a train platform.

The metro stop for the Chatuchak Weekend Market is not Chatuchak Park, but one stop further at Kamphaeng Phet. The latter drops you right inside the market.

All metro stations are fully accessible to wheelchair users. If the elevator has been put out of service, just ask the security staff present at every station and an attendant will come and get you to help you to deal with all the process of buying tickets and get to the train platform level.

Note that at present bag-checks take place at the entrance to each station, although it is usually nothing more than a quick peek inside unless you are looking particularly suspicious.