Turning device useful traffic lights have the following:

1, transportation supply order;

More than 2, for pedestrian safety supply a guarantee;

3, to specific traffic demand can cut hysteresis;

3, excellence work under coordinated signal control system;

4, useful intervention traffic transportation, to supply a non-motor vehicle with the passage of time;

5, if there are corresponding with emergency system, of great advantage to emergency vehicles;

6, can be useful to strengthen road traffic management, reduce traffic accidents attack, progress way using power, improve the traffic.

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