| 摘要 |
PROBLEM TO BE SOLVED: To provide techniques of stabilizing a support to a driver.SOLUTION: A first determination unit 76 provisionally determines collision or non-collision between a vehicle and another vehicle on the basis of positional information of the vehicle and positional information of the other vehicle. A second determination unit 78 changes a determination result to collision when the provisional determination result has been collision more than N times in succession if the determination result was previously non-collision, and changes the determination result to non-collision when the provisional determination result has been non-collision more than M times in succession if the determination result was previously collision. Here, "N" is smaller than "M". |
