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Minnesota Car / Permit practice

Alcohol & Drugs

Blood alcohol limits, zero-tolerance and implied-consent laws, and how alcohol and drugs — legal or not — affect your driving.

Content reviewed against official driver handbooks · July 7, 2026

14 questions · pass with 11 correct. You get instant feedback and an explanation after every answer.

Study questions with answers

12 sample Alcohol & Drugs questions with the correct answer, a short explanation, and the official handbook reference. Read through them, then take the quiz above.

  1. 1. In Minnesota, a driver of a passenger vehicle can be arrested for DWI at what alcohol concentration?

    Correct answer: 0.08 or higher

    An alcohol concentration of 0.08 percent or more (0.04 in a commercial vehicle) is the threshold for a DWI arrest.

    Source: Chapter 8 - Minnesota Driving While Impaired (DWI) law

  2. 2. What is the reinstatement fee tied to an alcohol-related license revocation?

    Correct answer: $680

    An alcohol-related revocation carries a $680 reinstatement fee along with a new license application and possible ignition interlock enrollment.

    Source: Chapter 8 - Penalties

  3. 3. Carrying an open container of alcohol in the passenger area of a moving vehicle is what?

    Correct answer: Illegal for both drivers and passengers

    No one may drink or keep an open alcohol container in a vehicle on a public road, whether they are driving or riding.

    Source: Chapter 8 - Open container

  4. 4. Under the implied consent law, refusing a blood, breath, or urine test after a lawful request is what?

    Correct answer: A crime that revokes your license for one to six years

    Refusing the required chemical test is itself a crime and results in license revocation of one to six years depending on prior offenses.

    Source: Chapter 8 - Implied consent/search warrant law

  5. 5. An ignition interlock device stops a vehicle from starting when it detects an alcohol concentration of what?

    Correct answer: 0.02 or above

    The interlock is wired to the starter and blocks ignition if it reads 0.02 percent or higher when you blow into it.

    Source: Chapter 8 - Ignition Interlock Device program

  6. 6. How does alcohol affect a driver's judgment?

    Correct answer: It causes them to misjudge their own impairment and take risks

    Alcohol distorts judgment so drivers underestimate their impairment, drive too fast, and neglect safe habits like buckling up.

    Source: Chapter 8 - Types of effects

  7. 7. Which factor makes DWI penalties more severe?

    Correct answer: Having a child under 16 in the vehicle

    Penalties increase for prior DWIs, a concentration of 0.16 or higher, being under 21, refusing a preliminary test, or having a child under 16 aboard.

    Source: Chapter 8 - Penalties

  8. 8. For a driver under 21, how much alcohol in their system makes operating a vehicle illegal?

    Correct answer: Any detectable amount

    Minnesota's no-tolerance rule makes it illegal for anyone under 21 to drive with any measurable alcohol; a first offense suspends the license 30 days.

    Source: Chapter 8 - Underage drinking - no tolerance rule

  9. 9. How does alcohol affect a driver's vision?

    Correct answer: It narrows peripheral vision and can blur sight

    Alcohol reduces the range of eye movement, shrinking peripheral vision, and can blur vision at higher concentrations.

    Source: Chapter 8 - Types of effects

  10. 10. Where must you keep opened cannabis products while driving on a public road?

    Correct answer: In the trunk or an area not occupied by the driver and passengers

    Opened cannabis products must ride in the trunk or another space away from occupants, not the glove box or utility compartment.

    Source: Chapter 8 - Possession and open package law

  11. 11. What does the proof number on a bottle of liquor represent?

    Correct answer: Twice the percentage of alcohol

    Proof equals double the alcohol percentage; for example, 80-proof liquor is 40 percent alcohol.

    Source: Chapter 8 - Things to know about alcohol

  12. 12. What is the only reliable way to lower your alcohol concentration?

    Correct answer: Letting enough time pass

    Only time sobers you; the liver removes alcohol at about one drink per hour, and coffee, showers, or exercise do not speed it up.

    Source: Chapter 8 - Things to know about alcohol

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Every Minnesota question is written from the official Minnesota driver handbook and checked against its current edition. DMV Test Free is a free, independent study resource — not affiliated with any DMV or government agency. About DMV Test Free