Here is what various traffic lights mean:
STEADY RED: Stop. Do not go until the light is green. If a green arrow is shown with the red light, you may go only in the direction of the arrow and only if the way is clear.
You may make a right turn at a steady red light after coming to a full stop and yielding the right-of-way to oncoming traffic and pedestrians. You may make a left turn at a steady red light when turning from a one-way road into another one-way road after coming to a full stop and yielding the right-of-way to oncoming traffic and pedestrians.
You may not make a turn at a red light if there is a NO TURN ON RED sign posted, or another sign, signal or pavement marking prohibits the turn. Also, turning on a red light is not allowed in New York City unless a sign is posted permitting it.
The driver of a school bus carrying pupils may not turn right on any red light.