Question This sign means: Answers Railroad ahead. No passing zone. School zone. Explanation A round yellow sign indicates that there is a railroad crossing ahead. Take a FREE Practice Test Now This questions appears in the following tests: California Practice Test Iowa Practice Test Kansas Practice Test Connecticut Practice Test Georgia Practice Test Illinois Practice Test Delaware Practice Test Kentucky Practice Test Wisconsin Practice Test Alabama Practice Test District Of Columbia Practice Test Wyoming Practice Test Tennessee Practice Test Arizona Practice Test Maryland Practice Test Arkansas Practice Test Mississippi Practice Test Maine Practice Test South Dakota Practice Test South Carolina Practice Test
