When is it legal to turn right on red in New York?

In New York, it is legal to turn right on red after coming to a full stop and ensuring it's safe to turn. This procedure is put in place to promote safety for both the driver and pedestrians. When a driver approaches a red light and intends to turn right, they must first come to a complete stop, which allows them to assess the traffic situation and check for any pedestrians or oncoming vehicles.

After stopping, if the way is clear and it is safe to proceed, the driver can make the right turn. This requirement helps to minimize accidents and encourages drivers to be attentive at intersections. The other options do not capture the necessity of the full stop or the assurance of safety before making the turn. Simply slowing down or acting under a green light does not provide the same level of caution and care needed at traffic signals, while turning only during specific hours is not a standard regulation for right turns on red.