It features a built-in laser, strobe light, audible message, and electroluminescent lamp working together to lead building occupants towards emergency exits.

它的内置激光，频闪灯光，声响信息，和电致发光灯共同工作将建筑物居住者引向紧急出口。

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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。

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Shortly after the movie started, they and others noticed the emergency exit door to the audience's right swing open, spilling light from an outside lamp into the darkened theater.

WSJ: Witnesses Describe Colorado Theater Shooting