Question This sign tells you that: Answers No turns are allowed on the road. The road narrows ahead. There is a series of curves ahead. Explanation Warning signs are usually yellow with black markings. They alert you to conditions that are immediately ahead. This sign warns drivers about an upcoming winding road. This questions appears in the following tests: California Practice Test Mississippi Practice Test Alabama Practice Test Delaware Practice Test South Dakota Practice Test Wisconsin Practice Test Tennessee Practice Test Arkansas Practice Test Georgia Practice Test Kentucky Practice Test Illinois Practice Test Wyoming Practice Test Iowa Practice Test Maryland Practice Test District Of Columbia Practice Test Kansas Practice Test Connecticut Practice Test Nebraska Practice Test Maine Practice Test Arizona Practice Test