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MICHIGAN SOS · WRITTEN TEST (OPERATOR'S LICENSE)

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Alcohol, drugs and DUI: Michigan SOS written test practice

5 free practice questions on alcohol, drugs and DUI for the Michigan SOS written knowledge test, each with the correct answer and a short explanation. Study them here, then check yourself in the interactive quiz or the exam simulator.

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1. For drivers 21 years of age and older, driving with a blood alcohol concentration (BAC) is considered illegal starting at:

  1. 0.05%
  2. ✓ 0.08%
  3. 0.10%
  4. Any detectable amount

Why: 0.08% — the legal limit for drivers aged 21 and older.

2. What is the zero-tolerance blood alcohol content (BAC) limit for drivers under 21 in Michigan?

  1. 0.08%, same as adult drivers
  2. ✓ 0.02%, essentially any measurable presence of alcohol
  3. 0.05%
  4. There is no separate limit for drivers under 21

Why: Michigan's zero-tolerance law sets the legal BAC limit for drivers under 21 at just 0.02%, far below the 0.08% limit that applies to drivers 21 and older.

3. A commercial vehicle driver is considered to be intoxicated if their BAC is:

  1. 0.08%
  2. ✓ 0.04% and higher
  3. 0.02%
  4. 0.10%

Why: For commercial drivers, a stricter limit applies—0.04%.

4. What does Michigan's implied consent law mean for drivers?

  1. Drivers may refuse any chemical test with no consequence
  2. ✓ By driving on Michigan roads, you have automatically agreed to take a chemical test if lawfully arrested for OWI/DUI
  3. It only applies to commercial drivers
  4. It requires drivers to carry proof of insurance at all times

Why: Under implied consent, simply by operating a vehicle on Michigan's roads you agree in advance to submit to a chemical test if you are lawfully arrested on suspicion of OWI/DUI; refusing carries its own penalties.

5. Drivers and passengers are prohibited from having the following items inside the vehicle:

  1. Food or drinks
  2. ✓ An open container of alcohol
  3. Phone Holder
  4. Sunglasses

Why: Open containers of alcohol are prohibited inside the vehicle for both the driver and passengers.

About the Michigan written test

50questions on the real test
40/50correct answers to pass (80%)
Next day → 30 dayswait grows after repeated fails (3rd+ fail)

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