United States Permit Test Coach
Regulatory signsQuestion 17 of 223
White sign with SPEED LIMIT 55 at the top and MINIMUM 45 below it

This sign shows a maximum and a minimum speed. What does the minimum speed mean?

  1. It is the speed to use in bad weather
  2. It is the lowest legal speed on that road
  3. It is the speed for large trucks only
  4. It is the speed to use at night
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Correct answer: It is the lowest legal speed on that road

A minimum speed limit shows the lowest legal speed. It is used where slow driving can block the normal flow of traffic.

Source: Manual on Uniform Traffic Control Devices for Streets and Highways (MUTCD), 11th Edition with Revision 1 (FHWA, December 2025), Section 2B.24 Minimum Speed Limit Plaque (R2-4P) and Combined Maximum and Minimum, page 128

Practice regulatory signs

Questions last reviewed: 18 October 2026