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Wisconsin 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.

Questions reviewed against the official Wisconsin driver handbook · July 7, 2026

10 questions · pass with 8 correct. You get instant feedback and an explanation after every answer.

Study questions with answers

10 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. Driving under the influence of drugs in Wisconsin is illegal for:

    Correct answer: Any drug, including prescription and over-the-counter

    It is illegal to drive under the influence of any drug, and that includes both prescription and non-prescription drugs.

    Source: Section 9: Dangerous Driving Behaviors — A. Alcohol, Drugs and Driving

  2. 2. Before driving after taking a prescription or over-the-counter medicine, you should:

    Correct answer: Read the label for warnings about operating machinery

    Check the medicine's warning label; if it warns against operating heavy machinery, that includes driving a motor vehicle.

    Source: Section 9: Dangerous Driving Behaviors — A. Alcohol, Drugs and Driving

  3. 3. Under Wisconsin's Implied Consent law, if an officer asks you to take a prohibited alcohol concentration test, you:

    Correct answer: Are required to take it

    Implied consent means you must agree to the requested PAC test; refusing leads to arrest for the violation.

    Source: Section 9: Dangerous Driving Behaviors — A. Alcohol, Drugs and Driving (Implied Consent)

  4. 4. According to the handbook, studies show that people who use marijuana while driving:

    Correct answer: Make more driving mistakes

    Research shows marijuana users make more mistakes behind the wheel.

    Source: Section 9: Dangerous Driving Behaviors — A. Alcohol, Drugs and Driving

  5. 5. For drivers under the age of 21 in Wisconsin, the legal alcohol concentration while driving is:

    Correct answer: 0.00%

    Drivers under 21 are held to a 0.00% standard, meaning they may not have any alcohol in their system while driving.

    Source: Section 9: Dangerous Driving Behaviors — A. Alcohol, Drugs and Driving

  6. 6. What is the only thing that will actually sober up a person who has been drinking?

    Correct answer: The passage of time

    Only the passage of time will sober someone up; coffee, food, and cold air do not speed the process.

    Source: Section 9: Dangerous Driving Behaviors — A. Alcohol, Drugs and Driving

  7. 7. If you refuse the officer's chemical test under Implied Consent, you can expect to lose your driving privileges for at least:

    Correct answer: One year

    Refusing the test results in arrest and the loss of your driving privileges for a minimum of one year, along with other consequences.

    Source: Section 9: Dangerous Driving Behaviors — A. Alcohol, Drugs and Driving (Implied Consent)

  8. 8. One way alcohol and drugs make driving more dangerous is that they:

    Correct answer: Make it hard to judge distance, speed, and movement

    These substances impair your thinking and decisions, making it hard to judge distance, speed, and the movement of other vehicles.

    Source: Section 9: Dangerous Driving Behaviors

  9. 9. Having any amount of a controlled substance in your system while driving is treated the same as:

    Correct answer: Operating while impaired

    The handbook states that any measurable amount of a controlled substance is treated the same as operating while impaired.

    Source: Section 9: Dangerous Driving Behaviors — A. Alcohol, Drugs and Driving

  10. 10. If you plan to drink alcohol away from home, the safest choice is to:

    Correct answer: Arrange for a sober ride home ahead of time

    Arrange a ride ahead of time; ask a sober friend or family member to drive, or have a bartender call a cab.

    Source: Section 9: Dangerous Driving Behaviors — A. Alcohol, Drugs and Driving

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Every Wisconsin question is written from the official Wisconsin 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