Practice question What does a flashing yellow traffic signal tell you to do? Stop and wait for a green lightProceed with cautionMake a U-turn immediatelyTreat the road as closed Answer: B — Proceed with caution The correct answer is shown above. Try the full quiz for additional practice. Practice more: Maryland Road Signs Practice Practice Questions - Maryland MVA Knowledge Test Road Signs, Signals, and Pavement Markings Practice Exam →