In the past five years, xx-type high-speed trains have experienced 4 derailment accidents. In response to public doubts about the design flaws of xx-type high-speed trains, the train manufacturer of this type put forward a refutation: the investigation showed that every derailment accident was caused by the driver's violation of operating regulations.
for the train manufacturer's refutation?
In the past five years, not all derailment accidents of high-speed trains were caused by drivers violating operating regulations.