Curve 25 MPH Sign
Recommended safe speed for upcoming curve is 25 MPH
What to do
Reduce speed to 25 MPH before entering curve.
Tips
Advisory speeds are for ideal conditions. Go slower in rain or ice.
Test yourself
You see this sign while driving. What do you have to do?
Show the answer
Reduce speed to 25 MPH before entering curve.
Common mistake
Ignoring advisory speed signs
About warning signs
Warning signs are diamond-shaped and yellow with black symbols. They alert you to hazards ahead — curves, intersections, crossings — so you have time to slow down. On the DMV written test, expect several questions asking what a specific warning sign means and what action it calls for.
Practice the rule this sign carries
The 'Basic Speed Law' means you can be cited for unsafe speed even when:
- A. Driving 5 mph over the limit in clear weather
- B. Driving exactly at the posted speed limit
- C. Driving below the posted speed limit if conditions are hazardous
- D. Driving on a road with no posted speed limit
Show answer
C. Driving below the posted speed limit if conditions are hazardous — The Basic Speed Law requires you to drive at a speed safe for actual conditions — fog, rain, heavy traffic, or road hazards may require driving well below the posted limit. The posted limit is the maximum, not a guaranteed safe speed.
Universal rule · checked against NHTSA Ten Tips for Safe Driving — Safe Driving Basics · verified 2026-08-01
Frequently asked questions
What does the Curve 25 MPH Sign mean?
Recommended safe speed for upcoming curve is 25 MPH
What should you do at a Curve 25 MPH Sign?
Reduce speed to 25 MPH before entering curve.
Reference standard: Federal Highway Administration Manual on Uniform Traffic Control Devices ↗. State and local agencies may add rules or operating times, so follow the complete posted sign where you drive. How DMV Prep sources content.
More warning signs
