汽车高速行驶时，特别是夜间高速行驶时，如果驾驶员低头观看仪表显示或者观看音响显示，前方遇到紧急情况就很可能来不及采取有效措施而造成交通事故。

When a car is at high speed, especially at night, if the driver lowers his head to watch meters or audio display, he will not take effective measures in time when some emergencies appear suddenly.

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