A system control failure threw Hua Lamphong, the country's main railway station into chaos Wednesday morning, while two unrelated train accidents later followed in the provinces.
A power failure disabled the track control system, blocking all arrivals and departures of trains from about 6am onwards.
By the time technicians overrode the computerised system and manually operated the track switches, more than 10 trains had been affected with hundreds of passengers suffering delays lasting some two hours, according to Phonsutthi Thongsat, the State Railway of Thailand's train operation centre director.