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DMV Permit · Warning Signs

A yellow diamond sign with an arrow that makes a sharp right bend. What should the driver do?

Correct answer

This is a sharp curve warning — reduce speed before the curve, not during it; the recommended advisory speed (if shown on a rectangular plate below the diamond) indicates the safe speed for the curve; stay in your lane through the curve

  1. A This is a decorative sign with no meaning
  2. B This is a sharp curve warning — reduce speed before the curve, not during it; the recommended advisory speed (if shown on a rectangular plate below the diamond) indicates the safe speed for the curve; stay in your lane through the curve
  3. C Stop and check for other vehicles
  4. D Turn right only at this intersection

Why this is the answer

HORIZONTAL ALIGNMENT SIGNS: Yellow diamond signs with curved or bent arrows warn of road alignment changes ahead. Types: Curve right/left (arrow curves); Sharp curve right/left (arrow bends more sharply); Reverse curve (S-curve); Winding road (multiple curves); DRIVER RESPONSE: Slow down BEFORE the curve — braking in a curve transfers weight and reduces turning traction; the safe curve speed is significantly lower than the posted speed limit in many cases; maintain your lane through the curve; watch for oncoming vehicles that may drift into your lane; ADVISORY SPEED SIGNS: Yellow rectangular plates (sometimes below the diamond) show the recommended curve speed in mph — this is advisory, not mandatory, but ignoring it significantly increases crash risk.
Source: DMV Road Signs — Curve Warning Signs

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