MN MN Alcohol and Drug Laws 1 — Questions and Answers
Question 1: What is the legal blood alcohol concentration (BAC) limit for drivers age 21 and older in Minnesota?
- 0.04%
- 0.06%
- 0.08% (Correct answer)
- 0.10%
Correct answer: 0.08%
In Minnesota, it is illegal to drive with a BAC of 0.08% or higher for drivers age 21 and older.
Question 2: Under Minnesota's implied consent law, what does a driver automatically agree to by operating a motor vehicle on public roads?
- Paying higher insurance premiums
- Submitting to chemical testing if suspected of DWI (Correct answer)
- Allowing police to search the vehicle at any time
- Surrendering driving privileges upon request
Correct answer: Submitting to chemical testing if suspected of DWI
By driving on Minnesota roads, all drivers impliedly consent to chemical testing (breath, blood, or urine) if law enforcement has probable cause to suspect DWI.
Question 3: What BAC level triggers an 'aggravated DWI' charge in Minnesota, indicating extreme impairment?
- 0.08%
- 0.10%
- 0.12%
- 0.16% (Correct answer)
Correct answer: 0.16%
A BAC of 0.16% or higher — twice the legal limit — results in an aggravated DWI charge in Minnesota, which carries harsher penalties.
Question 4: What is the legal BAC limit for commercial motor vehicle (CMV) drivers in Minnesota?
- 0.02%
- 0.04% (Correct answer)
- 0.06%
- 0.08%
Correct answer: 0.04%
Commercial drivers are held to a stricter standard of 0.04% BAC, half the limit for non-commercial drivers.
Question 5: If a driver refuses to submit to a chemical test after a DWI arrest in Minnesota, what is the minimum license revocation period for a first offense?
- 90 days
- 6 months
- 1 year (Correct answer)
- 2 years
Correct answer: 1 year
Refusing a chemical test in Minnesota results in a minimum 1-year license revocation for a first offense — longer than the penalty for a failed test.
Question 6: Which of the following substances, besides alcohol, can result in a DWI charge in Minnesota?
- Caffeine
- Over-the-counter antihistamines only
- Prescription drugs, controlled substances, and hazardous substances (Correct answer)
- Only illegal street drugs
Correct answer: Prescription drugs, controlled substances, and hazardous substances
Minnesota's DWI law applies to any substance — including prescription medications, controlled substances, or hazardous materials — that impairs a driver's ability to operate a vehicle.
Question 7: What is the minimum license revocation period for a first-time DWI offense in Minnesota where the driver fails the chemical test?
- 30 days
- 60 days
- 90 days (Correct answer)
- 6 months
Correct answer: 90 days
A first-time DWI offense with a failed chemical test results in a 90-day license revocation in Minnesota.
MN MN Alcohol and Drug Laws 1
What is the legal blood alcohol concentration (BAC) limit for drivers age 21 and older in Minnesota?