Practice question What does a flashing red traffic signal mean? The same thing as a stop signProceed without slowing if the way looks clearThe signal is only for pedestriansThe road is closed in all directions Answer: A — The same thing as a stop sign The correct answer is shown above. Try the full quiz for additional practice. Practice more: SD Road Signs Practice Practice Questions - South Dakota Driver License Signs, Signals, and Pavement Markings Practice Exam →