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Bridge Ices Before Road: What It Means & What To Do

Bridge Ices Before Road (W8-13) - diamond yellow with black warning sign: The bridge surface freezes before the road surface
MUTCD CodeW8-13
CategoryWarning Signs
ShapeDiamond
ColorYellow with black

What Does the Bridge Ices Before Road Mean?

The bridge surface freezes before the road surface. Use extreme caution in cold weather.

About This Sign

Bridges lose heat from both top and bottom, causing them to freeze faster than regular roads. Slow down and avoid sudden braking.

Where you will see it

You meet this sign before a bridge in cold weather. The bridge deck can be icy even when the road leading to it looks clear.

What to do

  • Slow down before you reach the bridge.
  • Avoid sudden braking and sharp steering on the bridge.
  • Use extreme caution in cold weather.

A common mistake

Drivers see a clear road and assume the bridge will be the same. Bridges lose heat from top and bottom, so they freeze faster than the road does.

What to remember for the test

Remember the reason: a bridge loses heat from both its top and its bottom, so it freezes before regular road. Slow down and brake gently.

Other Warning Signs

Frequently Asked Questions

What does the Bridge Ices Before Road mean?

The bridge surface freezes before the road surface. Use extreme caution in cold weather.

What shape and color is the Bridge Ices Before Road?

The Bridge Ices Before Road uses the Diamond shape and Yellow with black coloring.

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