Introduction - If you have any usage issues, please Google them yourself
Experimental crossroads traffic lights management report and its source code design requirements: set intersection north and south, east-west four groups of red, yellow, green, red, yellow and green lights on the crossroads of law consistent with the actual laws of traffic lights off . However, when the red light into green light, which way (north-south) by the count of another intersection (east-west) the number of vehicles waiting for, the expiration of the provisions of the amount converted another intersection (east-west) still timing control, time to change .