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Idaho Motorcycle practice

Idaho Motorcycle: Alcohol, Drugs & Impairment practice test

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 · August 12, 2026

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

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Study questions with answers

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

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  1. 1. When does an Administrative License Suspension notice take effect in Idaho?

    Correct answer: Thirty days after it is served

    The Notice of Suspension becomes effective 30 days after the date it was served on the driver.

    Source: Idaho Motorcycle Rider's Manual — Administrative License Suspensions

  2. 2. In Idaho, a driver 21 years of age or older is considered under the influence at what blood alcohol concentration?

    Correct answer: .08 or more

    The manual lists .08 or above as the DUI threshold for drivers who are at least 21.

    Source: Idaho Motorcycle Rider's Manual — Alcohol and Idaho Law

  3. 3. Someone drinks seven drinks over three hours. Using the manual's rough guide, how many remain in their system?

    Correct answer: Four

    The manual subtracts about one drink per hour, so seven drinks over three hours leaves roughly four still in the body — and about four more hours would be needed to clear them.

    Source: Idaho Motorcycle Rider's Manual — Blood Alcohol Concentration (BAC)

  4. 4. Which of these is a way the manual suggests for stepping in to stop an impaired rider?

    Correct answer: Arrange a safe ride home for them

    Suggested tactics include arranging another way home, slowing the drinking, finding any excuse to keep the rider where they are, and enlisting other riders to help.

    Source: Idaho Motorcycle Rider's Manual — Step In & Protect Fellow Riders

  5. 5. Why does the manual warn against artificial stimulants to fight fatigue?

    Correct answer: As they wear off they bring on extreme fatigue or depression

    When stimulants wear off they often leave the rider severely fatigued or depressed, making it very hard to concentrate on riding safely.

    Source: Idaho Motorcycle Rider's Manual — Fatigue

  6. 6. What does the manual say about combining alcohol with other drugs?

    Correct answer: Together they are far more dangerous than either alone

    Taking alcohol and drugs together is much more dangerous than either one alone, and many over-the-counter and prescription medicines carry side effects that raise a rider's risk.

    Source: Idaho Motorcycle Rider's Manual — Alcohol & Drugs While Riding

  7. 7. If the court agrees with the officer's findings, what happens to the license of a rider who refuses a first breath test in Idaho?

    Correct answer: A one-year suspension with no driving privileges at all

    A first refusal costs the rider a full year of suspension, with no driving privileges of any sort permitted.

    Source: Idaho Motorcycle Rider's Manual — Alcohol Test Refusal

  8. 8. What is the status of a third or later DUI conviction within ten years in Idaho?

    Correct answer: A felony

    Three or more convictions inside a ten-year span is a felony, punishable by a term with the State Board of Corrections of up to ten years and a fine as high as $5,000.

    Source: Idaho Motorcycle Rider's Manual — Penalties When Completing & Failing a Breath Test

  9. 9. Injuries occur in what share of motorcycle crashes involving substance abuse, according to the manual?

    Correct answer: 90 percent

    The manual reports injuries in 90 percent of those motorcycle crashes, compared with 33 percent of automobile crashes involving substance abuse.

    Source: Idaho Motorcycle Rider's Manual — Important Information

  10. 10. What is the maximum fine for a first DUI conviction in Idaho for a driver over 21?

    Correct answer: Up to $1,000

    The manual lists a fine of up to $1,000 along with as much as six months in jail for a first conviction.

    Source: Idaho Motorcycle Rider's Manual — Penalties When Completing & Failing a Breath Test

  11. 11. Which alcohol concentration does the manual say carries even stiffer penalties in Idaho?

    Correct answer: .20 or more

    A reading of .20 or above triggers harsher penalties than the ordinary DUI level.

    Source: Idaho Motorcycle Rider's Manual — Alcohol and Idaho Law

  12. 12. Which three factors does the manual identify as playing the largest part in determining BAC?

    Correct answer: The amount consumed, how quickly it is consumed, and body weight

    How much a person drinks, how fast they drink it, and how much they weigh are the three main drivers of blood alcohol concentration.

    Source: Idaho Motorcycle Rider's Manual — Blood Alcohol Concentration (BAC)

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Every Idaho question is written from the official Idaho 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