High-ranking officials, including Pichet Kunadhamraks, the department’s deputy direct-general, and Nirut Maneephan, governor of the State Railway of Thailand, visited the accident site.
They found that the broken signal was the reason why a freight train transporting containers crashed into a bus with 60 passengers.
Twent-nine people were injured.
The department is studying guidelines to lessen accidents on railroad crossings.
Meanwhile, Transport Minister Saksiam Chidchob confirmed that the SRT's budget for installing gates at railroad crossings had been cut by the panel studying the draft of Budget Procedures Act for fiscal 2020.