Traffic signal is a traffic signal baton police in the post stage with baton directing traffic

Traffic signal is a traffic signal baton police in the post stage with baton directing traffic, including straight signal, left turn signal and stop signal.
Straight signal: Stretch your right arm is raised right hand holding the stick, then crank down the left, the right and left straight permit passage of the vehicle; the vehicle turning right parties, without prejudice being released of vehicle traffic case, you can pass.