High-speed rail in Thailand

In October 2010, the Thai parliament decided to continue planning for a high speed rail (HSR) network. Five different lines - which would touch Bangkok - were to be planned. The lines would be able to handle speeds of 250 km/h.

As of 2019, construction in Nakhon Ratchasima Province of [a] high-speed rail, had become around 3.5 kilometers of high-speed rail.^[1] In January 2021, a government spokesperson said that construction had started on a second high-speed railway: "the high-speed railway linking three airports" [from Bangkok to Rayong (province)].^[2]

High Speed Routes

High-Speed Corridor	Route	Speed (km/h)	Length (km)	Network	Projected Operation	Status
Bangkok-Nakhon Ratchasima High-Speed Railway	Bangkok–Ayutthaya–Saraburi–Nakhon Ratchasima	250	250	China	"could be in service by 2026"[3]	Under construction
Bangkok-Rayong High-Speed Railway	Bangkok–Chachoengsao–Chonburi–Rayong	250	193.5	Thai privatized	2026-2027	"Opposition from within the ... government has (slowed down or) stalled (changes or) revisions to a contract to build the ... high-speed rail line" (as of 2024's fourth quarter);[4] Years earlier, an EIA was started.
Nakhon Ratchasima-Vientiane Railway	Nakhon Ratchasima–Khon Kaen–Udon Thani–Nong Khai–Vientiane	Unknown	380	China	2029	Construction has not started (as of 2025's first quarter).[5][2]
Bangkok-Hua Hin High-Speed Railway	Bangkok–Nakhon Pathom–Ratchaburi–Phetchaburi–Hua Hin	250	211	Thai privatized	Unknown	EIA
Bangkok-Phitsanulok High-Speed Railway	Bangkok–Ayutthaya–Phitsanulok	250	384	Japan	Unknown	Planning has stopped (as of 2019)[6]
Phitsanulok-Chiang Mai High-Speed Railway	Phitsanulok–Uttaradit–Lampang–Chiang Mai	250	285	Japan	Unknown	Planning has stopped (as of 2019)[6]