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.

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。

youdao

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.

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。

youdao