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第一信号是指驾驶员在驾驶机车时 ,周围环境中最先出现的影响安全行驶的信号 ,它是某一事故的先兆。驾驶员对第一信号的敏感性来源于平时的细心观察和经验积累。准确判断和果断处理第一信号 ,是安全行车的重要保证。（１）对道路上出现的第一信号判断要准确处理要果断机车在道?
The first signal is the first sign of a safe driving that occurs when the driver is driving a locomotive and is the harbinger of an accident. The sensitivity of the driver to the first signal comes from the usual careful observation and accumulation of experience. Accurate judgment and decisive treatment of the first signal is an important guarantee for safe driving. (1) the first signal on the road to determine the exact treatment to decisive locomotives in the road?