Question This road sign means: Answers Do not enter. Roundabout ahead. No U-turns. Explanation Regulatory signs provide notice to road users of traffic laws that must be obeyed. This sign tells drivers that it is prohibited to make a U-turn. Take a FREE Practice Test Now This questions appears in the following tests: Wyoming Practice Test Georgia Practice Test Maryland Practice Test Alabama Practice Test Illinois Practice Test Delaware Practice Test Kentucky Practice Test Arkansas Practice Test Connecticut Practice Test Maine Practice Test Tennessee Practice Test District Of Columbia Practice Test New Mexico Practice Test South Dakota Practice Test Wisconsin Practice Test Mississippi Practice Test Arizona Practice Test Kansas Practice Test California Practice Test