Reduced Speed Limit Ahead Sign: Meaning and What to Do
The yellow diamond showing a small speed limit sign beneath an upward arrow warns that the posted limit drops ahead. The number on the small sign is the limit you are about to reach; the design shown uses an example figure, and a real sign carries the actual new limit for that road.
Reduced Speed Limit Ahead Sign
The sign is posted where a highway enters a town, a school zone, or a work zone, and where a lower limit begins around a curve or over a hill. Its purpose is to have you at the new speed when you pass the regulatory sign, rather than braking at it.
What to do when you see the reduced speed limit ahead sign
Begin slowing as soon as you see the sign so that you are at or below the new limit by the time you reach the white speed limit sign. Check your mirror before slowing; the driver behind you may not have read the sign. The lower limit applies at the regulatory sign, not at this warning.
The signs it is confused with
Tests contrast it with the white Speed Limit sign that actually sets the limit, and with the yellow Advisory Speed plaque under a curve warning, which is a recommendation for the curve rather than a change in the legal limit. This sign warns; the white one commands.
Signs are one topic of ten on every test
Every state practice test covers signs, signals, and markings among its ten topics, with every answer explained. Pick your state and see how its exam asks about signs like this one; it is free, with no sign-up.
Choose your stateQuestions about the reduced speed limit ahead sign
What does reduced speed limit ahead mean?
The speed limit drops ahead to the number shown. Start slowing now so you are at the new limit when you reach the regulatory sign.
Does the new limit apply at this sign?
No. It applies at the white Speed Limit sign ahead. This yellow sign gives you the distance to slow down before then.
Where is it usually posted?
At the edge of towns, before school and work zones, and where a lower limit begins beyond a curve or crest that hides the regulatory sign.
How is it different from an advisory speed plaque?
The plaque under a curve warning recommends a speed for that hazard. This sign announces a change in the legal limit itself.
How does this sign appear on the written test?
As a meaning question, usually with the white speed limit sign and the advisory plaque as the distractors.