Traffic is divided into: signal lights, signal lights, pedestrian crossing traffic baton signals and signals.
Function of traffic signal
1) command signal:
When the green light is on, the vehicle and pedestrian traffic is allowed, but the turning vehicle shall not be allowed to obstruct the straight line of vehicles and the pedestrians being allowed to pass through.
When the yellow light II, vehicles are not allowed, pedestrians, but has crossed the stop line of vehicles and has entered the pedestrians in crosswalks may continue to pass, without prejudice to was released in the passage of vehicles and pedestrians, the right turn vehicles and T type at the junction of the right of free transverse line straight vehicles can pass.
When the red light is on, the vehicles and pedestrians are not allowed to pass, and the vehicles should be parked outside the parking lot. The right turn of the vehicle and the T type intersection on the right side of the straight line without cross road vehicles, without prejudice to be released vehicles and pedestrian traffic situations, can pass.
The green arrow light, as shown by the arrow allows the vehicles to pass.
The yellow light flashes, vehicles and pedestrians shall pass on to ensure the safety of the principle;
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2) Lane light signal:
Lane lights refers to green arrow and red fork lamp; when the green arrow light is on, the lane vehicles are allowed to pass; when the red light is on, the lane closed to traffic.
3) crosswalk signal lamp:
A light signal includes: green light, red light and green light flashes.
When the green light to allow pedestrians crossing; green light flashing, pedestrians are not allowed to enter the crosswalk; when the red light is on, no pedestrian entering the crosswalk.
4) traffic baton signal:
The traffic police issued that sends a stop signal, cars are not allowed. Has crossed the stop line of vehicles can be accepted; traffic police issued a straight line signal, it allows the vehicles to go straight, turn right in the vehicle is not hindered was released vehicles can pass; traffic police sent a signal to turn left to allow vehicles to turn left and straight line of vehicles, without straight to cross the road vehicle without prejudice to was released in the vehicle traffic situation of parties the right turning vehicle and T-shaped junction on the right, you can access.
5) command signal:
The command signal is divided into straight line, left turn and stop signal.

Vehicles and pedestrians in case of inconsistent with the signal lights, traffic signs or road markings and traffic police command, obey the command of traffic policeman.