No Left Turn Sign

Updated July 9, 2026

No Left Turn · MUTCD R3-2 · Regulatory sign

What the No Left Turn sign means

A red circle and slash over a black left-turn arrow prohibits left turns at this intersection. You must go straight or turn right instead. The sign protects intersections where a left turn would cross oncoming lanes dangerously, block a signal, or is physically impossible because of a median. It applies where it is posted, and a time plate below it may limit the ban to rush hours. Making a banned left turn is a moving violation even when the road looks completely clear of oncoming traffic.

What to do when you see it

Do not turn left here — continue through or find a legal alternative, and obey any posted time restrictions.

On the CA permit test

No Left Turn bars the turn even if no traffic is coming.

📱 Study smarter: PermitPal in your browser turns your state's handbook into short lessons, sign games, and real-format mock exams. Free to start — $29.99 once for everything, or $6.99 a week in the app. Also on the App Store and Google Play.