The Mass Rapid Transit Authority of Thailand (MRTA) will accelerate bidding for four electric rail projects worth more than THB128 billion to improve connectivity in Bangkok and surrounding areas. The planned feeder routes include the Brown Line (Khae Rai–Bung Kum), Grey Line (Watcharaphon–Thong Lor), Light Blue Line (Din Daeng–Sathon), and Silver Line (Bang Na–Suvarnabhumi).
The 22-km-long Brown Line, with 20 stations and an investment of THB42 billion, will be the first to move forward. It is under review due to the THB20 flat fare policy and adjustments linked to the N2 section of the third-stage expressway. The study is expected to conclude this year, with cabinet approval early next year and bidding later in 2026.
The other three projects were transferred from the Bangkok Metropolitan Administration (BMA). The 16.25 km Grey Line (15 stations, THB27.85 billion) and 18.3 km Silver Line (14 stations, THB43.92 billion) require updated feasibility and environmental studies, while the 6.7 km Light Blue Line (nine stations, THB14.73 billion) will be reviewed subsequently. All new lines will be incorporated into the city’s THB20 flat fare scheme.
