English
There are only four possibilities for vehicle operation at intersections: 1) At the beginning, the main trunk road will pass and the branch road will not. In this case, the main green light and branch red light will be on for 60s. 2) After 60s, the main road will stop and the branch road will not pass. In this case, the main yellow light and branch red light will be on for 5s. 3) After 5s, the trunk road will not pass, and the branch road will pass. In this case, the main red light and branch grChinese
交叉口车辆运行的可能性只有四种：1）一开始，主干道会通过，支路不会通过。在这种情况下，主绿灯和分支红灯将亮60秒。2） 60秒后，主干道将停止，支路将不通过。在这种情况下，主黄灯和支路红灯将亮5s。3） 5s后，主干道将不通过，支路将通过。在这种情况下，主红灯和支路gr
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