1. It helps drivers drive safely, protects the legal rights of drivers, and threatens to extort and extort money from pedestrians, cyclists and motorcyclists who cross the road, in case of event data recorder, the driver can provide valid evidence for himself. The responsibility of the accident is clear at a glance, the traffic police can deal with the accident quickly and accurately, and can not only evacuate the scene quickly to resume the traffic, but also retain the effective evidence at the time of the accident and create a safe and smooth traffic environment. In the case of professional hit men and highwaymen, the event data recorder will be able to provide definitive evidence of the crime: The scene of the accident and the physical description of the perpetrator.