At 05:07 on April 22, 2023, the Local Train No.4111 of Taiwan Railways Administration, MOTC (TRA), departed from Nan'ao station with Signal Passed at Danger (SPAD), and the on-board Automatic Train Protection (ATP) system activated the emergency brake to stop the train. The relevant staff didn’t notice the incident and continued the train operation after adjusting the setting of ATP, and cause the turnout failure. There were no fatalities or injuries in this occurrence.

After receiving the notification, the Taiwan Transportation Safety Board (TTSB) immediately dispatched three investigators with the staff of the Railway Bureau, MOTC, and TRA heading to the scene to conduct personnel interviews and collect relevant information. The TTSB identified this event as a railway occurrence following the Transportation Occurrence Investigation Act. The Investigator-In-Charge was assigned and an investigation team was launched to conduct the investigation.

Further information and the progress of the investigation for the case will be published on the TTSB website.

Vivi Yang, Secretariat Office
Tel: +886-2-7727-6217
E-mail: viviy2314@ttsb.gov.tw