Question This road sign means: Answers No passing zone. Winding road. Pedestrian crossing. Low ground railroad crossing. Explanation This sign indicates a low ground railroad crossing. Where this sign is present, railroad tracks cross the road at a steep slope and the bottom of low vehicles may drag or get caught on the tracks. Take a FREE Practice Test Now This questions appears in the following tests: New Jersey Practice Test Maine Practice Test New Mexico Practice Test Washington Practice Test Idaho Practice Test Oklahoma Practice Test Oregon Practice Test Iowa Practice Test Indiana Practice Test Arkansas Practice Test Mississippi Practice Test