Practice question What does a red X displayed over a lane mean? Do not use that laneUse that lane only to passThe lane is open to all trafficTurn left from that lane only Answer: A — Do not use that lane The correct answer is shown above. Try the full quiz for additional practice. Practice more: Puerto Rico Road Signs Practice Practice Questions - Puerto Rico DTOP CESCO Road Signs, Traffic Signals, and Pavement Markings Practice Exam →