当检测值超过阈值时该系统发出光声报警，在反应时间内警示驾驶员采取安全措施，从而避免与前方的目标车辆相撞。
And it displays the values at real time. To avoid colliding with the target vehicle ahead, it alarms to drivers in reaction time with light and sound when the measurement is above the critical value.
当后部车辆灯光照射到光控器后能使连接的车灯闪光发出警示信号。
When the light of a back vehicle is irradiated to an optical control device, the vehicle lamps which are connected can send out warning signals.
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