Indiana Car / Permit practice
Alcohol & Drugs
Blood alcohol limits, zero-tolerance and implied-consent laws, and how alcohol and drugs — legal or not — affect your driving.
Questions reviewed against the official Indiana driver handbook · July 7, 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 questions with the correct answer, a short explanation, and the official handbook reference. Read through them, then take the quiz above.
1. Which of the following are the main factors that determine a person's blood alcohol concentration?
Correct answer: The amount of alcohol, how fast it is consumed, and body weight
What mainly sets a person's BAC is how much they drink, the speed at which they drink it, and how much they weigh.
2. How long is the suspension for a driver who refuses to take a chemical test for the first time?
Correct answer: One year
Refusing a chemical test results in a one-year suspension of driving privileges.
Source: Indiana Driver's Manual, Ch. 5 (Operating a Vehicle While Intoxicated)
3. What is the purpose of an ignition interlock device a court may order installed?
Correct answer: It tests the driver's breath alcohol before the car will start
An ignition interlock tests the driver's breath alcohol level before the vehicle can be started.
Source: Indiana Driver's Manual, Ch. 5 (Operating a Vehicle While Intoxicated)
4. Before driving after taking a medication, what does the manual advise?
Correct answer: Read the label and discuss side effects with a physician or pharmacist
Check what the label says and go over possible side effects with your doctor or pharmacist before you get behind the wheel.
5. A driver with a prior operating-while-intoxicated conviction who refuses a chemical test faces a suspension of how long?
Correct answer: Two years
A refusal by a driver with a previous OWI conviction leads to a two-year suspension.
Source: Indiana Driver's Manual, Ch. 5 (Operating a Vehicle While Intoxicated)
6. How does alcohol affect a driver's abilities?
Correct answer: It impairs clear thinking and coordination and slows reaction time
Alcohol impairs clear thinking and physical coordination and slows reaction time.
7. Which of these behaviors may signal that another driver is impaired?
Correct answer: Weaving across the center line or drifting between lanes
Weaving across the center line or drifting between lanes is one sign that a driver may be impaired.
Source: Indiana Driver's Manual, Ch. 8 (Ways to Spot an Impaired Driver)
8. What does the Indiana manual say about prescription and over-the-counter medications and driving?
Correct answer: They can impair reasoning and coordination and affect safe driving
Many prescription and over-the-counter drugs can impair reasoning and coordination and affect your ability to drive safely.
9. In Indiana, the general blood alcohol concentration limit at which it is illegal to operate a vehicle is what?
Correct answer: .08
Operating a vehicle with a BAC over .08 is a criminal offense in Indiana.
Source: Indiana Driver's Manual, Ch. 5 (Operating a Vehicle While Intoxicated)
10. A conviction for operating a watercraft while intoxicated affects a person's driving privileges in what way?
Correct answer: It carries the same penalties as operating a motor vehicle while intoxicated
Operating a watercraft while intoxicated carries the same penalties for driving privileges as intoxicated operation of a motor vehicle.
Source: Indiana Driver's Manual, Ch. 5 (Operating a Watercraft While Intoxicated)
11. How does driving under the influence of drugs or alcohol affect crash risk?
Correct answer: It increases the likelihood of a crash
Crash risk goes up whenever a person drives after using alcohol or other drugs.
12. A driver who fails a chemical test for alcohol faces a suspension of driving privileges lasting how long?
Correct answer: 180 days
Failing a chemical test brings a 180-day suspension of driving privileges.
Source: Indiana Driver's Manual, Ch. 5 (Operating a Vehicle While Intoxicated)
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Every Indiana question is written from the official Indiana 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