提醒警报指明了一个非临界条件，这类警报可能意味着当前系统不是最优化的，而报警警报指明的是临界条件，要求立即采取行动。
A warning alert indicates a non-critical condition that might indicate a non-optimal system, while an alarm alert is a critical condition requiring immediate action.
本系统可安装在汽车上，用于雾天或夜间监测前方车辆，并在车速、车距达到临界安全值时发出报警信号，以避免交通事故的发生，确保行车安全。
It can give alarming signal when the speed of vehicle and the distance between vehicles reach the edge of security, so more traffic accidents can be avoided.
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