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Speed Limit: What It Means & What To Do

Speed Limit (R2-1) - rectangle (vertical) white with black/red regulatory sign: Do not exceed the posted speed
MUTCD CodeR2-1
CategoryRegulatory Signs
ShapeRectangle (vertical)
ColorWhite with black/red

What Does the Speed Limit Mean?

Do not exceed the posted speed. This is the maximum legal speed under ideal conditions.

About This Sign

Speed limit signs display the maximum allowable speed for that section of road. Drivers should reduce speed below the posted limit in poor weather or road conditions.

Where you will see it

White rectangular speed limit signs appear along nearly every road, and the number changes when the road type changes, such as near schools, in towns or on highways. The posted number is in miles per hour.

What to do

  • Keep your speed at or below the number shown.
  • Go slower than the limit in rain, fog, snow or heavy traffic.
  • Check for a new sign after you turn or enter another road.

A common mistake

Many drivers believe the limit is a target. It is the maximum under ideal conditions, so bad weather or road conditions can make the safe speed lower.

What to remember for the test

Know that the posted number is a maximum for ideal conditions, and that you must slow down when conditions are poor, even if you are below the limit.

Other Regulatory Signs

Frequently Asked Questions

What does the Speed Limit mean?

Do not exceed the posted speed. This is the maximum legal speed under ideal conditions.

What shape and color is the Speed Limit?

The Speed Limit uses the Rectangle (vertical) shape and White with black/red coloring.

Practice Road Sign Questions

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