Question This sign means: Answers Do not drink and drive. Slippery when wet. Road curves ahead. Explanation Warning signs are usually yellow with black markings. They alert you to conditions that are immediately ahead. This sign warns that the roadway is slippery when wet. Take a FREE Practice Test Now This questions appears in the following tests: Georgia Practice Test Oklahoma Practice Test Alabama Practice Test Delaware Practice Test Connecticut Practice Test Wyoming Practice Test Illinois Practice Test Maryland Practice Test Tennessee Practice Test Kentucky Practice Test Arizona Practice Test California Practice Test Kansas Practice Test Rhode Island Practice Test New York Practice Test South Dakota Practice Test Arkansas Practice Test Mississippi Practice Test Nebraska Practice Test Iowa Practice Test Wisconsin Practice Test Maine Practice Test District Of Columbia Practice Test