Question This sign means: Answers All traffic must turn left. No left turn. No U-turn. Explanation This sign means drivers cannot make a left turn. It is unsafe and unlawful to make a left turn at an intersection where this sign is posted. Take a FREE Practice Test Now This questions appears in the following tests: Arizona Practice Test California Practice Test Georgia Practice Test Maryland Practice Test Maine Practice Test Illinois Practice Test Arkansas Practice Test Kansas Practice Test Kentucky Practice Test Iowa Practice Test Wyoming Practice Test Delaware Practice Test Mississippi Practice Test Wisconsin Practice Test Tennessee Practice Test South Carolina Practice Test South Dakota Practice Test Connecticut Practice Test Rhode Island Practice Test Alabama Practice Test