If the system detects an obstacle that is likely to cause a crash, it warns the driver via an alarm, a flashinglight, and then a tactile or "haptic" warning which tightens the driver's seatbelt.
如果该系统监测到前面有可能引发碰撞的障碍物，它就会通过警报器、闪烁灯以及可感触的(tactile or haptic)的警告——收紧驾驶员的安全带——向驾驶员发出警告。