Public buses are plentiful and cheap, with a minimum fare of 6 baht to most destinations within metropolitan Bangkok. Air-conditioned buses have minimum and maximum fares of 10 and 22 baht, respectively. Air-conditioned micro-buses charge a flat fare of 25 baht all routes. A Bus Route Map is available at bookshops and the TAT office. Visit http://www.bmta.co.th for more information on Bangkok's public buses.
TAXI
Taxis cruising city streets are metred. They charge a minimum of 35 baht for the first 3 kilometres, and approximately 5 baht per kilometre thereafter. Make sure you have change, as taxi drivers often dont! Passengers must pay tolls in the case of using an expressway.
Tuk-Tuk
These three-wheeled open-air motorized taxis are popular for short journeys. Fares must be bargained in advance. Minimum fares, for journeys of up to 3 kilometers, are approximately 30 baht.
BTS (Sky Trains)
BTS Sky Train stations can mostly be found in commercial areas of Sukhumvit and Silom, it is fast and safe. The sky train is divided into 2 lines: Sukhumvit line (On Nut Station-Mo Chit Station), and Silom lines (Saphan Taksin Station-National Stadium Station). The sky train has a minimum and maximum fare of 10-40 baht. Tourists may buy 30 day tourist tickets to save money, only 250 baht/10 trips, or day tickets, 100 baht (unlimited trips).
The BTS Tourist Information Centers is open daily from 8.00 a.m. - 8.00 p.m. at the following stations:Siam, Nana and Saphan Taksin.
For more information, contact the Bangkok Mass Transit System at tel: 0 2617 7300 or visit http://www.bts.co.th
Subway (Metro)
BMCL Subway is another comfortable and fast transportation choice. The beginning of Chalerm Ratcha Mongkhon line is Hua Lum Phong station (also the main train station in Bangkok), total of 18 stations, major stations at: The Queen Sirikit's International Convention and Exhibition Center, Silom, Suan Lumpini, Asoke, Ratchada, Ladprao and Pahonyotin road. The Asoke and Silom stations are connected to the the BTS. There are also "Park & Ride" at Ladprao and Phra Ram 9 Stations. BMCL Subway has a minimum and maximum fare of 10-15 baht (For trial period only)
The BMCL subway is open daily from 06.00 a.m. - 12.00 midnight. For more information, call: 0-2264-5200.
Buses.
There are a lot of buses offered in Bangkok going to all places, with a fare starting at 3.5 baht for open air buses. Air-conditioned blue buses have minimum and maximum fares from 8 to 16 baht. Euro II or Orange air-conditioned buses charge 10-20 baht. Air-conditioned microbuses charge a flat fare of 20 baht all routes. For more information A buses route map is available at bookshops. A free city map can also be picked up at The Bangkok Tourist Division office, Bangkok Tourist Information Booths throughout Bangkok and the TAT office.For more information, call 184 or 0-2246-0973 or visit http://www.bangkokmetro.co.th
Boat
There are various types of boat identified in color flags. Boat service on the Chao Phraya River connects Bangkok with the northern neighbouring province of Nonthaburi, starting from the Tha Nam Non Pier and ending at Saphan Taksin Pier (Sathorn).
- Boats (no flag) stop at all pier, has a minimum fare of 8 baht.
- Rapid boats (orang flag) have a fare of 10 baht all routes.
- Express boats (yellow flag) stop at only on crowded and main piers. The Express boat has a fare of 15 baht - The boat with blue flag, is the fastest stopping only on 3 pier, ThaNamNon Pier, Siriraj Pier and SaphanTaksin (Sathorn) Pier.It has a minimum and maximum fares from 25-35 baht. (For trial period, it just newly had this type)all routes. After rush hour, these boat are used for tourist purpose.
There are boat service counters for travelers with guides to give information about the riverside.
Public buses are plentiful and cheap, with a minimum fare of 6 baht to most destinations within metropolitan Bangkok. Air-conditioned buses have minimum and maximum fares of 10 and 22 baht, respectively. Air-conditioned micro-buses charge a flat fare of 25 baht all routes. A Bus Route Map is available at bookshops and the TAT office. Visit 
Taxis cruising city streets are metred. They charge a minimum of 35 baht for the first 3 kilometres, and approximately 5 baht per kilometre thereafter. Make sure you have change, as taxi drivers often dont! Passengers must pay tolls in the case of using an expressway.
These three-wheeled open-air motorized taxis are popular for short journeys. Fares must be bargained in advance. Minimum fares, for journeys of up to 3 kilometers, are approximately 30 baht.
BTS Sky Train stations can mostly be found in commercial areas of Sukhumvit and Silom, it is fast and safe. The sky train is divided into 2 lines: Sukhumvit line (On Nut Station-Mo Chit Station), and Silom lines (Saphan Taksin Station-National Stadium Station). The sky train has a minimum and maximum fare of 10-40 baht. Tourists may buy 30 day tourist tickets to save money, only 250 baht/10 trips, or day tickets, 100 baht (unlimited trips). 
BMCL Subway is another comfortable and fast transportation choice. The beginning of Chalerm Ratcha Mongkhon line is Hua Lum Phong station (also the main train station in Bangkok), total of 18 stations, major stations at: The Queen Sirikit's International Convention and Exhibition Center, Silom, Suan Lumpini, Asoke, Ratchada, Ladprao and Pahonyotin road. The Asoke and Silom stations are connected to the the BTS. There are also "Park & Ride" at Ladprao and Phra Ram 9 Stations. BMCL Subway has a minimum and maximum fare of 10-15 baht (For trial period only)
There are various types of boat identified in color flags. Boat service on the Chao Phraya River connects Bangkok with the northern neighbouring province of Nonthaburi, starting from the Tha Nam Non Pier and ending at Saphan Taksin Pier (Sathorn).
