Signals, Signs and Pavement Markings · Signals
A flashing Red light
Flashing red light: At a flashing red light, come to a complete stop and yield to oncoming vehicles and pedestrians.
You may go when the way is clear. At a railroad crossing, you must come to a complete stop even if you don’t see a train.
Important
A flashing RED traffic light means the same as a stop sign. You must come to a full stop and then may go when it is safe to do so.
Learn it with your state's rules
DMV One Way teaches the whole handbook slide by slide and checks it with practice questions.