Traffic lights setup phase, pay attention to:

1, interspersed with planning, such as: adjacent traffic related equipment, visual is good or not.

2, interspersed with structure, such as the width of all import and export, the number of lanes, the penetration Angle, etc.

3, traffic conditions, such as: traffic volume, left and right turn rate, large car with rate, the number of crossing the line, interspersed with Angle, etc.

4, to fully consider the pedestrian waiting for the moment to a red light and green light time of passage, if the pedestrian red light time is too long, cause some pedestrians running a red light, green light time too short, will form a pedestrian crossing the road is not convenient.

5, to contact intersection driveway distribute situation that release method, such as the import lanes interspersed with intersection each direction is less, lane not satisfied vehicles waiting for the signal to turn left and go straight direction, to think in the import take turns to release.

6, to think about intersection traffic flow is inconsistent, the condition of asymmetry, etc, reasonable allocation adjustment phase, such as the asymmetry of left turn traffic, can be together after the release of transfer must be time left, to suspend the traffic flow smaller has left traffic instructions, traffic flow of sustained release, and be able to release the import together straight vehicles.