Alcohol, Drugs & Impairment

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. Besides illegal drugs, what else can impair a rider's ability to operate safely?

   Correct answer: Some prescription and over-the-counter medicines

   Some prescription and over-the-counter medicines can impair riding, so check with a doctor or pharmacist.

   Source: SC Motorcycle and Moped Operator Manual - Drugs and the Law

2. 2. Mixing alcohol with other drugs is dangerous because the drugs may:

   Correct answer: Multiply the effects of the alcohol

   Combining alcohol with other drugs can multiply the effects of the alcohol or add effects of their own.

   Source: SC Motorcycle and Moped Operator Manual - Other Impairing Drugs and Riding

3. 3. For a person under 21, the BAC level that can bring an automatic license suspension is:

   Correct answer: 0.02 percent or higher

   For riders under 21, a BAC of 0.02 percent or higher can lead to automatic suspension.

   Source: SC Motorcycle and Moped Operator Manual - Alcohol and the Law

4. 4. The manual notes that impairment from alcohol actually begins:

   Correct answer: With the very first drink

   Impairment starts with the very first drink; you can be impaired even under 0.08.

   Source: SC Motorcycle and Moped Operator Manual - Alcohol and the Law

5. 5. About how long does the body take to process the alcohol from roughly one drink?

   Correct answer: About one hour

   Your body processes about one drink per hour, and only time removes the alcohol.

   Source: SC Motorcycle and Moped Operator Manual - Don't Drink or Don't Ride

6. 6. In South Carolina, operating a motor vehicle at what BAC or higher puts you in violation of the law?

   Correct answer: 0.05 percent

   Operating with a BAC of 0.05 percent or higher is a violation, though impairment can begin even lower.

   Source: SC Motorcycle and Moped Operator Manual - Alcohol and the Law

7. 7. Which of these will actually speed up sobering from alcohol?

   Correct answer: Only the passing of time

   None of the popular remedies work; only the passage of time removes alcohol from your body.

   Source: SC Motorcycle and Moped Operator Manual - Don't Drink or Don't Ride

8. 8. Implied consent laws mean that by getting a driver's license you have:

   Correct answer: Agreed to a lawful test of your breath, blood, or urine if suspected of riding impaired

   Getting a license means you have implicitly agreed to a lawful test of your blood, breath, or urine if suspected of impaired riding.

   Source: SC Motorcycle and Moped Operator Manual - Alcohol and the Law

9. 9. Studies cited by the manual found that nearly what share of riders killed in crashes had been drinking?

   Correct answer: Nearly 40 percent

   Studies show nearly 40 percent of riders killed in motorcycle crashes had been drinking.

   Source: SC Motorcycle and Moped Operator Manual - Alcohol, Other Drugs and Riding

10. 10. Alcohol impairs a rider's judgment, reaction time, and:

    Correct answer: Vision

    Alcohol also affects vision, blurring it and slowing the ability to focus.

    Source: SC Motorcycle and Moped Operator Manual - Effects of Alcohol and other Impairing Drugs

11. 11. Refusing to take a lawfully requested BAC test in SC can cost you your driving privileges for:

    Correct answer: Six months

    Refusing a lawful BAC test can result in the loss of driving privileges for six months.

    Source: SC Motorcycle and Moped Operator Manual - Alcohol and the Law

12. 12. SC's zero-tolerance law makes it illegal for anyone under 21 to:

    Correct answer: Purchase, possess, or consume alcohol

    Zero-tolerance laws make it illegal for anyone under 21 to purchase, possess, or consume alcohol.

    Source: SC Motorcycle and Moped Operator Manual - Alcohol and the Law