Regulatory signs · R2-1
Speed Limit sign
Archive file: R02-01 Speed Limit/R02-01 Speed Limit 24x30.svg
FHWA public-use information
What it means
The number gives the posted speed limit.
Source: FHWA MUTCD — MUTCD 11th Edition with Revision 1 (December 2025), Section 2B.21, paragraph 13, PDF page 126.
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Meaning
Speed Limit gives the legal maximum for the signed road section when conditions are ideal. It is a ceiling, rather than a target you must reach. Rain or other poor conditions can make a lower speed necessary for safety even though the number on the sign has not changed.
What to do
For the Pennsylvania practice questions, read the displayed number as the maximum in ideal conditions. Then assess conditions separately. Do not use the posted maximum as a reason to maintain speed when the road has become unsafe at that speed.
Where it is used
The federal standard places a posted change in speed limit where the new limit begins, and provides for reminder signs beyond major intersections and interchanges. A Speed Limit sign applies to a road section; it is different from a warning of a particular curve ahead.
A sign to tell apart
A Curve sign warns about the shape of the road. It may have an advisory speed below it. Speed Limit instead states a regulatory maximum. Keep these two decisions separate: obey the legal maximum and choose a safe speed for the bend and the current conditions.
Practice with explanations
These are original learning questions based on the cited handbooks. Read each answer and its explanation below.
1. What does a Speed Limit sign tell a Pennsylvania driver?
- The speed to maintain in every kind of weather.
- The lowest speed allowed on the road.
- The legal maximum when conditions are ideal.
Answer: C. The legal maximum when conditions are ideal.
The posted limit is a maximum for ideal conditions. Poor conditions may require you to drive more slowly.
2. Heavy rain makes the posted speed unsafe on a Pennsylvania road. How should you respond?
- Choose a lower speed suited to the conditions.
- Maintain the posted speed because it is required.
- Exceed the limit to leave the rain sooner.
Answer: A. Choose a lower speed suited to the conditions.
A legal maximum does not promise that speed is safe in rain. Adjust downward when conditions call for it.
State source coverage
Handbook coverage and sample questions do not prove that a sign will appear on your exam. Even a published test scope cannot guarantee an individual exam question.
Pennsylvania
Handbook coverage
PennDOT explains this sign in its Pennsylvania Driver’s Manual. This is handbook coverage; it does not establish that this particular sign will appear on your Knowledge Test.
Pennsylvania permit sources · Practice with Pennsylvania questions
State variations
State-specific variations have not been independently established for this study.
Verified question coverage
These free state-bank questions were independently verified. This does not establish complete state-bank readiness, app availability or what will appear on your permit exam.
No currently verified state-bank question is available for this sign.
The linked 20-question permit quizzes do not currently include this sign.
Practice this sign in the federal 20-sign quiz. That tool uses MUTCD questions and is separate from the state-bank questions listed here.
This meaning is a federal MUTCD reference. Check your state's handbook for its rules and sign coverage; this page does not establish what appears on a state permit exam.
Try the free road sign quiz or find your state's handbook.
