ELECTRONIC EVENT RECORDER, SYSTEM, DATA EXCHANGING METHOD, AND MONITORING METHOD

摘要

PROBLEM TO BE SOLVED: To make automatically verifiable that a vehicle has been concerned in a specified event by transmitting an inquiry signal when a monitor station detects that the vehicle is running at a violation speed and transmitting the signature information of the vehicle from a smart card to the monitor station when the inquiry signal is received. SOLUTION: When a violation speed of a vehicle is detected or the like, the event recorder of the monitor station on the side of road periodically transmits the inquiry signal. When the inquiry signal is received (300) and it is verified that signal is true, the smart card transmits the signature information of the vehicle to the monitor station (302). When a sensor detects sudden or rapid acceleration or deceleration generated during collision (304), the smart cards attached to the respective vehicles respectively start transmitting the signature information and start receiving the signature information of the other vehicle (308). Then, this information is stored in a memory (310).