| 摘要 |
PROBLEM TO BE SOLVED: To realize a dangerous driving prevention device capable of changing an alarm threshold value by preparing for a gradient section and a mountainous road section. SOLUTION: When a condition in which vehicle speed is between an upper limit value and a lower limit value is a precondition for judging dangerous driving, the lower limit value is reduced if a gradient of a running road is up-grade exceeding a predetermined value, and on the contrary, the upper limit value is increased if the gradient of the running road is down-grade below a predetermined value. Moreover, it is possible to compensate a threshold value for judging dangerous driving so as to prevent the generation of an alarm by detecting an altitude of an own vehicle and regarding the running road as a mountainous road if the altitude exceeds a predetermined value.
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