Question This sign means: Answers Stop sign ahead. Railroad crossing ahead. Construction ahead. Explanation A round sign always indicates that you are approaching a railroad crossing. Take a FREE Practice Test Now This questions appears in the following tests: Mississippi Practice Test Delaware Practice Test Illinois Practice Test Georgia Practice Test Tennessee Practice Test Arkansas Practice Test Wyoming Practice Test California Practice Test Kentucky Practice Test Kansas Practice Test New Mexico Practice Test Iowa Practice Test Arizona Practice Test Wisconsin Practice Test Oklahoma Practice Test South Dakota Practice Test Maryland Practice Test Alabama Practice Test Connecticut Practice Test