Oregon Motorcycle practice
Oregon 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
12 questions · pass with 10 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.
Show all 12 questions with answers
1. About how quickly can the body eliminate alcohol?
Correct answer: About one drink per hour
There are no shortcuts; the body processes only about one drink an hour, and only time actually removes alcohol.
Source: Oregon Motorcycle & Moped Manual, Section Two - Don't Drink and Ride
2. Among a rider's core responsibilities is to always:
Correct answer: Ride free of alcohol and drugs
Rider responsibilities include always riding alcohol- and drug-free and always wearing protective gear.
Source: Oregon Motorcycle & Moped Manual, Section Five - Rider Responsibilities
3. Combining alcohol with other drugs can:
Correct answer: Multiply the effects or add new ones
Never drink while taking other drugs; they can multiply alcohol's effects or add effects of their own, even causing serious harm.
Source: Oregon Motorcycle & Moped Manual, Section Two - Other Impairing Drugs and Riding
4. Prescription and over-the-counter drugs:
Correct answer: May affect your ability to ride safely
A broad mix of prescribed medicines, over-the-counter products, and illegal drugs can undermine safe riding; ask your doctor or pharmacist about the side effects.
Source: Oregon Motorcycle & Moped Manual, Section Two - Other Impairing Drugs and Riding
5. Alcohol and other impairing drugs affect the part of the brain that controls:
Correct answer: Judgment
Alcohol and other impairing drugs affect the brain areas that control judgment, hurting your decisions in traffic.
Source: Oregon Motorcycle & Moped Manual, Section Two - Effects of Alcohol and other Impairing Drugs
6. In Oregon during 2022, what share of riders killed in motorcycle crashes had been drinking?
Correct answer: 63 percent
Studies show 63 percent of Oregon riders killed in motorcycle crashes in 2022 had been drinking.
Source: Oregon Motorcycle & Moped Manual, Section Two - Factors Affecting Rider Performance
7. Which of these actually removes alcohol from your body faster?
Correct answer: None of these; only the passage of time works
Cold showers, coffee, and exercise do not speed the removal of alcohol; the only proven remedy is time.
Source: Oregon Motorcycle & Moped Manual, Section Two - Don't Drink and Ride
8. Alcohol and certain drugs can affect your eyes by:
Correct answer: Blurring vision and causing double vision
Drinking and certain drugs may fog your sight, make focusing harder, and produce double images.
Source: Oregon Motorcycle & Moped Manual, Section Two - Effects of Alcohol and other Impairing Drugs
9. If you plan to drink, the responsible choice is to:
Correct answer: Leave the motorcycle home and arrange another ride
Planning to drink means leaving the bike at home or stored securely and getting home another way, perhaps by cab or a sober driver.
Source: Oregon Motorcycle & Moped Manual, Section Two - Don't Drink and Ride
10. One effect of alcohol and impairing drugs on a rider is:
Correct answer: Slower processing and reaction time
Alcohol and other impairing drugs slow how you process information and hurt your ability to react quickly.
Source: Oregon Motorcycle & Moped Manual, Section Two - Effects of Alcohol and other Impairing Drugs
11. Marijuana and other cannabis products can:
Correct answer: Slow reaction time and distort perception of time and distance
Cannabis slows reaction time, hurts concentration, and distorts your perception of time and distance, especially when facing the unexpected.
Source: Oregon Motorcycle & Moped Manual, Section Two - Other Impairing Drugs and Riding
12. According to the manual, your ability to ride safely can be affected by:
Correct answer: As little as one drink
Even a single drink can dull clear thinking and safe control of the bike.
Source: Oregon Motorcycle & Moped Manual, Section Two - Don't Drink and Ride
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