Question This sign means: Answers No U-turn. Traffic signal ahead. Railroad ahead. Explanation This sign indicates that U-turns are prohibited. Pass your DMV Written Test with flying colors Take me to the cheat sheet Illinois This questions appears in the following tests: Alabama Practice Test 13 Alabama Practice Test 8 Arizona Practice Test 12 Arkansas Practice Test 5 California Practice Test 34 Connecticut Practice Test 8 Delaware Practice Test 9 Delaware Practice Test 7 District Of Columbia Practice Test 19 Georgia Practice Test 37 Georgia Practice Test 28 Illinois Practice Test 33 Illinois Practice Test 21 Iowa Practice Test 24 Kansas Practice Test 7 Kentucky Practice Test 11 Kentucky Practice Test 35 Maine Practice Test 4 Maryland Practice Test 19 Mississippi Practice Test 28 Oklahoma Practice Test 18 South Dakota Practice Test 7 Tennessee Practice Test 13 Wisconsin Practice Test 18 Wyoming Practice Test 4 Wyoming Practice Test 34 California Practice Test 40