Introduction - If you have any usage issues, please Google them yourself
The city cross the intersection traffic light control system is mainly responsible for controlling the east-west and north-south traffic light status and conversion order, the key is the conversion and the appropriate time delay between the various state based on the above considerations, the following design:
(1) When the green light from east to west, north-south orientation of the red light, and maintain the 25S
(2) north-south when the east-west green, yellow light, red light, and maintain 5S
(3) When the red light from east to west, north-south green light, and maintain the 15S
(4) When the red light from east to west, north-south green, yellow light, and maintain 5S
(5) and finally back to the state (1), and the cycle repeated.