| 摘要 |
<p>PROBLEM TO BE SOLVED: To reliably store the traveling data just before a vehicle becomes an abnormal state. SOLUTION: When recording of the traveling data of a vehicle is required (S40), the traveling data is recorded (S80, 90) in a nonvolatile memory by overwriting. When the vehicle becomes an abnormal state such as collision, recording is prohibited, and the recorded traveling data is maintained (S100). The judgement whether or not the vehicle becomes an abnormal state is performed on the basis of the judgement (S50) whether the vehicle becomes a stopped state within the specified time Tc from the time when an absolute value of the longitudinal acceleration Gx becomes not less than a reference value Gx1 or an absolute value of the lateral acceleration Gy becomes not less than a reference value Gy1, the judgement (S60) whether or not the vehicle is in the stopped state and an absolute value of the longitudinal acceleration Gx of the vehicle is not less than a reference value Gx2, and the judgement (S70) whether or not the vehicle is in the stopped state and an absolute value of the lateral acceleration Gy of the vehicle is not less than a reference value Gy2.</p> |
