交通信号灯应该被视为规定来执行而非仅仅被当作参考。
Traffic lights should be treated as laws rather than guidelines.
首先提出我国现行交通法律法规对信号灯色规定的不足之处，然后对交通信号控制存在的基本问题进行重点研究。
While discussing the deficiencies of existing traffic regulations on the signal color, the paper focuses on the basic issues in urban traffic signal control.
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