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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. For a commercial driver, the blood alcohol limit while operating is:

    Correct answer: 0.04

    The threshold for a CDL driver is 0.04 BAC, lower than the 0.05 limit for other drivers.

    Source: Utah Driver Handbook — Section 10: Alcohol and the Law

  2. 2. An ignition interlock device must be checked (monitored) at least every:

    Correct answer: 60 days

    Ignition interlock-restricted drivers must have the device monitored at least once every 60 days.

    Source: Utah Driver Handbook — Section 10: Ignition Interlock Restricted Driver

  3. 3. Which of these is reduced by alcohol and other impairing drugs?

    Correct answer: Your reaction time and judgment

    Alcohol and impairing drugs cut down judgment, vision, color distinction, and reaction time, making driving far more dangerous.

    Source: Utah Driver Handbook — Section 10: Effects of Alcohol and Drugs

  4. 4. After a first DUI conviction, a driver is automatically restricted to a vehicle with an ignition interlock device for:

    Correct answer: 18 months

    A first DUI conviction brings an automatic 18-month ignition interlock restriction, or three years if the driver was under 21 when arrested.

    Source: Utah Driver Handbook — Section 10: Ignition Interlock Restricted Driver

  5. 5. When a driver is arrested for DUI, a Utah peace officer may confiscate the license, and the division will begin the suspension on the:

    Correct answer: 45th day after the arrest

    Following a DUI arrest, the officer may take the license and the division starts the suspension on the 45th day after the arrest date.

    Source: Utah Driver Handbook — Section 10: Alcohol and the Law

  6. 6. According to the handbook, a driver's vision begins to be affected by alcohol at a BAC as low as:

    Correct answer: 0.02

    Vision — the most important sense in driving — is impaired starting at 0.02 BAC for all drivers.

    Source: Utah Driver Handbook — Section 10: Effects of Alcohol and Drugs

  7. 7. For a person under the age of 21, purchasing, possessing, or drinking alcohol is:

    Correct answer: Against the law

    It is illegal for anyone under 21 to purchase, possess, or drink alcoholic beverages.

    Source: Utah Driver Handbook — Section 10: 21 and Under

  8. 8. Under Utah's Not-a-Drop Act, a driver under 21 with any measurable alcohol loses driving privileges on a first offense for:

    Correct answer: Six months

    The Not-a-Drop law denies all driving privileges for six months on a first offense for a driver under 21 with any measurable alcohol.

    Source: Utah Driver Handbook — Section 10: 21 and Under

  9. 9. Alcohol and other impairing drugs are involved in roughly what share of Utah's fatal traffic crashes each year?

    Correct answer: About 40%

    Alcohol and other impairing drugs play a role in about 40% of the crashes in which someone is killed each year.

    Source: Utah Driver Handbook — Section 10: Alcohol/Drugs & Driving

  10. 10. On a first DUI conviction for a driver 21 or older, the license is suspended for:

    Correct answer: 120 days

    A first DUI conviction for a driver 21 and older carries a 120-day license suspension.

    Source: Utah Driver Handbook — Section 10: Alcohol and the Law

  11. 11. Under Utah's implied consent law, refusing a chemical test on a first offense leads to a license revocation of:

    Correct answer: 18 months

    Refusing the officer's chemical test results in an 18-month revocation for a first offense and 36 months for a later one.

    Source: Utah Driver Handbook — Section 10: Implied Consent Law

  12. 12. The handbook states that alcohol impairment begins:

    Correct answer: With the first drink

    Impairment starts with the very first drink, and even one drink can affect a person's ability to drive.

    Source: Utah Driver Handbook — Section 10: Effects of Alcohol and Drugs

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Every Utah question is written from the official Utah 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