Traffic Light Line Diagram. First things first. Rung 0002 turning on north yellow and east yellow.
23 signals for light rapid transit systems trams 148 231 general 148 24 wigwag signals 149 241 general 149 242 signal heads 149 243 control equipment 150 244 swinging or lifting moveable bridges 150 245 airfields 151 246 premises used by the emergency services 151 247 warning lights. In this circuit i used 330ohm resistors. The worlds first traffic light was a manually operated gas lit signal installed in london in december 1868.
Rung 0003 turn on east red and north green.
Traffic light system arduino program. Go if its safe to do so green go amber stop unless its not safe to do so repeat. Green to red to amber to amber relay 4 back to green. Rm is red light for main road.