Advisory Speed Signs
An advisory speed sign (MUTCD W13-1P) is a small yellow MPH plaque mounted below a warning sign to recommend the safe speed for the condition ahead. It may be used with any warning sign — most often a curve, turn, winding road, or ramp. Unlike a white regulatory speed limit sign, the advisory speed is a recommendation for that specific hazard. Customizable to any speed, on rust-proof .080" aluminum with reflective sheeting.
Advisory Speed Plaque (W13-1P)
Commonly Mounted With
An advisory speed plaque is installed directly below the warning sign for the hazard it applies to. It is most often paired with:
Advisory Speed Signs FAQ
What is an advisory speed sign?
An advisory speed sign (MUTCD W13-1P) is a small yellow plaque showing a speed, such as 25 MPH, mounted directly below a warning sign. It recommends the highest safe speed for the condition ahead — most often a curve, turn, or ramp.
What does an advisory speed sign mean?
It tells you the recommended safe speed to travel through the hazard shown on the warning sign above it. Unlike a regulatory speed limit sign, the advisory speed is a recommendation for that specific condition, not a separate posted limit for the whole road.
Advisory speed signs may be used with any what?
Advisory speed signs may be used with any warning sign to indicate the safe speed for that condition. They are commonly paired with curve, turn, winding road, reverse curve, hill, exit ramp, and other warning signs.
Are advisory speed limits enforceable?
The advisory speed itself is a recommendation, not a regulatory limit, so a driver is not ticketed simply for exceeding the advisory number. However, the regular speed limit and safe-driving laws still apply, and driving too fast for the posted condition can still result in a citation.
What shape and color is an advisory speed sign?
It is a rectangular yellow plaque with a black legend, matching the yellow warning sign it is mounted beneath. This yellow color marks it as a warning device rather than a white regulatory speed limit sign.
What is the difference between an advisory speed sign and a speed limit sign?
A speed limit sign is white and regulatory — it sets an enforceable maximum for the road. An advisory speed sign is yellow and advisory — it recommends a safe speed for a specific hazard such as a curve, and is always paired with a warning sign.
What sizes are available, and can I choose the speed?
The plaque is customizable to any advisory speed (for example 15, 25, 35 MPH). Common sizes are 18x18 and 24x24 inches to match the warning sign above. Signs are printed on rust-proof .080" aluminum with reflective sheeting.
