Green light or arrow:  At a green light, you may go if the way is clear.  At a green arrow, you may go in the direction of the arrow if the way is clear.  If you are turning, you must yield the right-of-way to vehicles coming from the other direction and pedestrians in the intersection.  Be sure to check for less visible vehicles such as motorcycles, bicycles, and mopeds.  If a traffic light changes from red to green while a pedestrian is in the street, allow the pedestrian to cross the street before turning.