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Slippery When Wet: What It Means & What To Do

Slippery When Wet (W8-5) - diamond yellow with black warning sign: The road surface may become slippery when wet
MUTCD CodeW8-5
CategoryWarning Signs
ShapeDiamond
ColorYellow with black

What Does the Slippery When Wet Mean?

The road surface may become slippery when wet. Reduce speed.

About This Sign

This sign warns of road conditions that can be especially slippery during rain. Increase following distance.

Where you will see it

You meet this sign on stretches of road that can get especially slippery in the rain, where the surface offers less grip than usual.

What to do

  • Reduce your speed when the road is wet.
  • Increase your following distance.
  • Avoid sudden braking, steering or acceleration.

A common mistake

Drivers often keep the same speed and following distance as on a dry day. Wet pavement gives less grip, so you need more room and more time to stop.

What to remember for the test

Remember that the risk is a slippery surface when wet, and the two key actions are slowing down and following farther behind.

Other Warning Signs

Frequently Asked Questions

What does the Slippery When Wet mean?

The road surface may become slippery when wet. Reduce speed.

What shape and color is the Slippery When Wet?

The Slippery When Wet uses the Diamond shape and Yellow with black coloring.

Practice Road Sign Questions

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