United States Permit Test Coach
Regulatory signsQuestion 18 of 223
Black left-turn arrow inside a red circle with a red diagonal bar, on a white square

What does this sign tell you?

  1. Left turns are allowed from any lane
  2. Left turns are prohibited from this approach
  3. Only left turns are allowed here
  4. Turn left now to avoid the road ahead
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Correct answer: Left turns are prohibited from this approach

A movement prohibition sign shows a turn that you must not make. A red circle and bar over a left arrow means no left turn.

Source: Manual on Uniform Traffic Control Devices for Streets and Highways (MUTCD), 11th Edition with Revision 1 (FHWA, December 2025), Section 2B.26 Movement Prohibition Signs (R3-1 through R3-4, R3-18, and R3-27), page 130

Practice regulatory signs

Questions last reviewed: 18 October 2026