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. 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. 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. 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. 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. 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. 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. 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. 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. 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. 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