Investigators are examining whether the electronic signaling system failed.

调查人员正在检查电子信号系统是否出现故障。

India's railway minister says the fatal train derailment on Friday was caused by an error in the electronic signaling system that led a train to wrongly change tracks.

印度铁道部长表示，星期五发生的火车脱轨事故是由电子信号系统的错误导致火车错误地改变轨道造成的。