Practice question A red X lane-use signal over a lane means: Use the lane only for passingDo not drive in that laneThe lane is reserved for bicyclesLeft turns are permitted from the lane Answer: B — Do not drive in that lane The correct answer is shown above. Try the full quiz for additional practice. Practice more: DC Road Signs Practice Practice Questions - District of Columbia DMV Knowledge Test Signs, Signals, and Markings Practice Exam →