Skip to main content
DMV Test Free

Louisiana Motorcycle practice

Alcohol, Drugs & Impairment

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

15 questions · pass with 12 correct. You get instant feedback and an explanation after every answer.

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.

  1. 1. How does fatigue relate to riding, according to the manual?

    Correct answer: It can reduce your control of the motorcycle

    Fatigue can affect your control of the motorcycle, so riders should dress for the elements, limit distance, and take frequent breaks.

    Source: Louisiana Motorcycle Operator Manual - Being in Shape to Ride (Fatigue)

  2. 2. The manual states that alcohol can generally be eliminated from the body at what rate?

    Correct answer: About one drink per hour

    The body eliminates alcohol at a rate of roughly one drink per hour, so drinking faster than that lets it accumulate.

    Source: Louisiana Motorcycle Operator Manual - Alcohol in the Body (Blood Alcohol Concentration)

  3. 3. Which three factors does the manual say play the major role in determining a person's BAC?

    Correct answer: Amount consumed, speed of drinking, and body weight

    The amount of alcohol consumed, how fast it is consumed, and the person's body weight are the three major factors.

    Source: Louisiana Motorcycle Operator Manual - Alcohol in the Body (Blood Alcohol Concentration)

  4. 4. The manual cautions that using artificial stimulants to stay awake often results in:

    Correct answer: Extreme fatigue or depression when they wear off

    Stimulants frequently cause extreme fatigue or depression when they wear off, leaving riders unable to concentrate.

    Source: Louisiana Motorcycle Operator Manual - Being in Shape to Ride (Fatigue)

  5. 5. According to the manual, a 12-ounce can of beer contains about the same amount of alcohol as:

    Correct answer: A 5-ounce glass of wine or a single shot of liquor

    A 12-ounce beer, a mixed drink with one 1.5-ounce shot of liquor, and a 5-ounce glass of wine all hold the same amount of alcohol.

    Source: Louisiana Motorcycle Operator Manual - Alcohol in the Body (Blood Alcohol Concentration)

  6. 6. To fight fatigue on a long ride, the manual recommends stopping to rest at least how often?

    Correct answer: Every two hours

    Take frequent rest breaks by stopping and getting off the motorcycle at least every two hours.

    Source: Louisiana Motorcycle Operator Manual - Being in Shape to Ride (Fatigue)

  7. 7. The manual states that even a single drink can begin to affect a rider's:

    Correct answer: Ability to think clearly and ride safely

    As little as one drink can degrade your ability to think clearly and ride safely, since abilities and judgment can be affected by that one drink.

    Source: Louisiana Motorcycle Operator Manual - Alcohol and Other Drugs in Motorcycle Operation

  8. 8. If you drink two drinks in one hour, the manual explains that at the end of the hour:

    Correct answer: At least one drink still remains in your system

    Since only about one drink is eliminated per hour, at least one of the two drinks will still remain in your bloodstream.

    Source: Louisiana Motorcycle Operator Manual - Alcohol in the Body (Blood Alcohol Concentration)

  9. 9. Aside from alcohol, which of the following can the manual says can impair a rider's concentration?

    Correct answer: Too much caffeine or certain prescription drugs

    For some riders, even too much caffeine or certain prescription drugs can adversely affect concentration, so riding must be free of such influences.

    Source: Louisiana Motorcycle Operator Manual - Group Riding (Preparation)

  10. 10. Under Louisiana's implied consent law, what BAC makes a rider under 21 subject to penalties?

    Correct answer: 0.02% or above

    For a person under twenty-one, a blood alcohol level of 0.02% or above triggers the law's procedures.

    Source: Louisiana Motorcycle Operator Manual - Tests for Suspected Drunken Drivers

  11. 11. What usually determines whether a rider was operating legally or illegally after drinking?

    Correct answer: A breath or urine test

    It does not matter how sober you look or act; a breath or urine test is what usually determines whether you were riding legally.

    Source: Louisiana Motorcycle Operator Manual - Alcohol and the Law

  12. 12. The manual says that whether a rider is legally intoxicated is not the real issue because:

    Correct answer: Impairment begins well below the legal limit

    Impairment of judgment and skill begins well below the legal limit, so a rider can be affected even before reaching it.

    Source: Louisiana Motorcycle Operator Manual - Alcohol and the Law

Practice Alcohol, Drugs & Impairment in another state

Every Louisiana question is written from the official Louisiana 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