Michigan Speed Limits practice test

Practice limits and how to adjust your speed, with questions based on the What Every Driver Must Know (SOS-133).

Sample Speed Limits questions

What does Michigan's Basic Speed Law require?

  • The same speed as the traffic around you
  • At least 10 mph under any posted limit
  • A careful speed that lets you stop within the clear distance ahead
  • The posted limit, whatever the conditions
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A careful speed that lets you stop within the clear distance ahead

Your speed can never be above the posted limit, and conditions may call for going slower than it.

Source: What Every Driver Must Know (SOS-133, Rev. 10/2025), Chapter 4, Speed limits, p. 26

What is the lowest speed a Michigan school zone limit may be set to under the school zone law?

  • 10 mph
  • 25 mph
  • 15 mph
  • 20 mph
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25 mph

Under this law, a school zone limit may be up to 20 mph less than the normal posted limit, but not below 25 mph.

Source: Michigan Vehicle Code, MCL 257.627a

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About these questions

We wrote these practice questions from the facts in the What Every Driver Must Know (SOS-133) (Revised October 2025 edition) and from official sources on road signs. Every answer links to its source, so you can check it and read more.

DMV Decoded is an independent guide, not a government agency. This practice test is not connected to the Michigan Department of State (Secretary of State), and your actual test will have different questions. Study the handbook, and check the agency's website for current rules.