Driver's License Test Prep
Horizontal yellow rectangle with a black border and two lines of black text reading SLIPPERY WHEN WET.
MUTCD
W8-10P
Category
warning
Color
yellow
Shape
rectangle horizontal
National · MUTCD Sign Reference

Slippery When Wet Plaque

Supplemental plaque stating the warning above applies because the surface is slippery when wet.

Mounted below another warning (often an advisory speed or curve plate) this plaque names the slippery-when-wet condition as the reason. Drivers should treat the upper warning as in force during rain, snowmelt, or other wet conditions.

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Yellow diamond with black border containing a thick black arrow that sweeps in a smooth curve from lower right up to the upper left.
Curve Left
Yellow diamond with black border containing a thick black arrow that sweeps in a smooth curve from lower left up to the upper right.
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Source

Wikimedia Commons: File:MUTCD W8-10P.svg (Public domain)

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