后扰流板的辅助制动灯。
车辆在紧急制动时自动打开警示灯连续闪烁，险情解除后，驾驶员把车辆加速到正常速度时再去解除警示灯，这样就提高了大家的行车安全，从而防止了追尾事故的发生。
However, we still use the emergency lamp of the 40s, and when emergency braking or an accident takes place, only by manual can the driver make alarm light flashed.
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