4 way traffic control sequence on one lane present in each way with GO sequence E-W-N-S direction, with density control. Next sequence direction Go means next direction traffic GO state eg, if in east direction traffic is in GO, then next direction traffic GO is West. If next sequence directions traffic congestion are in level 0 ie less traffic congestion, then use normal level 0 Green for next sequence direction traffic GO, eg if in east direction traffic is in GO, then in West GO duration = normal level 0 West GO duration time. If next sequence direction has level 1 traffic congestion ie level 1 congestion more than level 0 congestion, then switching to this sequence will have more green duration time than level 0 green duration time. eg.if in east direction traffic is in GO, then in West GO duration = level 1 West GO duration time and level 1 West GO duration time > level 0 West GO duration time. If next sequence direction has level 2 traffic congestion ie, level 2 congestion more than level 1 congestion, then switching to this sequence will have more green duration time than level 1 green duration time. eg.if in east direction traffic is in GO, then in West GO duration = level 2 West GO duration time and level 2 West GO duration time > level 1 West GO duration time. We use IR_LEVEL1_SW PRESSED ON to indicate level 1 congestion and IR_LEVEL2_SW PRESSED ON to indicate level 2 congestion for each direction.
Schematics and simulation is done by Proteus CAD. NOT EXPERIMENTED IN REAL TIME ENVIRONMENT.
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