This sign means: 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. This questions appears in the following tests: Wisconsin Motorcycle Practice Test 25 Wisconsin Motorcycle Practice Test 25 Alabama Motorcycle Practice Test 82 Arkansas Motorcycle Practice Test 47 California Motorcycle Practice Test 67 Delaware Motorcycle Practice Test 101 Georgia Motorcycle Practice Test 25 Idaho Motorcycle Practice Test 93 Illinois Motorcycle Practice Test 126 Kansas Motorcycle Practice Test 96 Nebraska Motorcycle Practice Test 66 Ohio Motorcycle Practice Test 161 South Carolina Motorcycle Practice Test 112 South Dakota Motorcycle Practice Test 97 Tennessee Motorcycle Practice Test 86 Virginia Motorcycle Practice Test 15 Wisconsin Motorcycle Practice Test 95 Wyoming Motorcycle Practice Test 79