Question This sign means: Answers School zone or crossing. Pedestrian crossing. Railroad ahead. Explanation A five-sided yellow or yellow-green sign alerts drivers to either a school zone or school crossing. Take a FREE Practice Test Now This questions appears in the following tests: Georgia Practice Test Kentucky Practice Test California Practice Test Connecticut Practice Test Wisconsin Practice Test Arkansas Practice Test Kansas Practice Test Illinois Practice Test New York Practice Test Delaware Practice Test Wyoming Practice Test Maine Practice Test District Of Columbia Practice Test Alabama Practice Test South Dakota Practice Test Mississippi Practice Test Tennessee Practice Test Oklahoma Practice Test Arizona Practice Test Maryland Practice Test South Carolina Practice Test New Mexico Practice Test