The “Mass Rapid Transit Authority of Thailand” Act B.E. 2543 (2000) has set 3 objectives with the following

1. To carry out mass rapid transit operations in Bangkok Metropolitan and its vicinity, including other provinces as prescribed by Royal Decree, or between such provinces.
2. To study, analyze and prepare projects or plans pertaining to mass rapid transit operations for improvement and modernization thereof.
3. To carry out businesses related to the mass rapid transit operations or other business beneficial to the MRTA and passengers using the mass rapid transit services.