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Yellow diamond sign with a black arrow bending sharply at a right angle

Turn sign

W1-1 warns of a sharp turn ahead.

MUTCD code W1-1 · Warning sign · Source: MUTCD 11th Edition, Section 2C.07

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What does this sign warn you about?

Yellow diamond sign with a black arrow bending sharply at a right angle
  • A side road joining from the right
  • A sharp turn in the road ahead
  • A required turn at the next signal
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A sharp turn in the road ahead

Yellow diamonds warn of conditions ahead. Slow down before you reach the turn.

Source: Manual on Uniform Traffic Control Devices, 11th Edition, Section 2C.07; Arizona Driver License Manual and Customer Service Guide, Section 3, Roadway and Vehicle Knowledge: Turn, Curve and Winding Road Signs (p. 41); Tennessee Comprehensive Driver License Manual, Section B, Chapter 3, Traffic Signs and Signals: Warning Signs - Diamond Shape (p. 38)

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DMV Decoded is an independent guide, not a government agency. Check your state's driver handbook for the signs on its test.