Curve sign
A yellow diamond with a curved arrow. It warns of a curve in the road ahead, bending the way the arrow bends.
Rules vary by state and country. This explains the sign's standard meaning in the U.S. Manual on Uniform Traffic Control Devices; it isn't legal advice.
How to read it
It is the MUTCD's standard warning ahead of a curve. For sharper bends, those with an advisory speed of 30 mph or less, the Turn sign is used instead. An advisory speed plaque may be added below any diamond-shaped warning sign, giving the highest speed recommended for the curve.
More road signs
Sources
- MUTCD 2009 Edition, Chapter 2C: Warning Signs and Object Markers, MUTCD 2009, Part 2, U.S. Federal Highway Administration, Section 2C.07
- Pennsylvania Driver's Manual, Chapter 2: Signals, Signs and Pavement Markings, Pennsylvania Department of Transportation, p. 13
- Official Florida Driver License Handbook, rev. 08/2023, Florida Department of Highway Safety and Motor Vehicles, p. 50
Last reviewed September 25, 2026 by Rory Hansen. How we research