To ensure it maximizes its strategic location at the heart of the ASEAN Economic Community (AEC), Thailand is investing around 1.9 trillion baht under its Thai Transport Infrastructure Development Plan 2015-2022 and Urgent Transport Action Plan 2015. Key infrastructure projects include: 1) intercity rail network development, 2) public transportation network development to solve traffic problems in Bangkok and its suburbs, 3) increase of highway capacity to connect the country’s key production bases with those of neighbouring countries, 4) marine transport network development, and 5) enhancement of air transport service capacity.

Thailand has an excellent rail system spanning 4,952 km of railways that constitute a vital link in the transportation chain. The office of the Royal State Railways of Siam was first established under the control of the Ministry of Public Works in October 1890.

The State Railway of Thailand (SRT) operates under the Ministry of Transportation and Communications. It is responsible for building, operating, and maintaining Thailand's railway tracks.

According to the strategies on Thailand’s infrastructure development in transportation (2015 – 2022) by the Office of Transport and Traffic Planning, 887 km of rail will be laid by 2020.

It is expected that when they are completed, it will revamp the provincial rail network and to connect with production bases in rural areas and neighboring countries.

SRT also is preparing for high-speed trains to link tourism destinations and reduce time travel in satellite cities by 2020. Thai and Chinese authorities are planning to construct a high speed line stretching from the northeastern province of Nong Khai to Bangkok.

This high-speed train project consists of four main lines: Bangkok - Chiang Mai; Bangkok - Nong Khai; Bangkok - Rayong; Bangkok - Padang Besar. The total distance will be 1,039 km with speed at 250 km/hr.

Bangkok's mass rapid transit system encompasses various types of electric trains, including elevated, underground, ground-level, and under-river lines, spanning a total of 242.34 kilometers. This extensive network features 9 existing routes with 160 stations, and there are currently 105.40 kilometers under construction. The system effectively covers the central city, serving a wide range of commercial, residential, and tourist areas, with expansion plans reaching into outlying regions. Operating hours are from 6:00 am to 12:00 midnight daily, offering frequent service throughout the day, especially during rush hours. Fares are determined by the distance traveled.