Indiana: Alcohol and drugs Practice Test
How alcohol and drugs affect driving, the BAC limit, chemical test refusal and impaired drivers on the road.
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Questions are original and based on the official manual "Indiana Driver’s Manual" (July 2026), Indiana Bureau of Motor Vehicles.
All 19 questions in this practice test
Take the test above first, then use this list to study. Tap “Show answer” to see the correct answer and explanation.
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What is the legal blood alcohol concentration (BAC) limit stated in the manual for operating a vehicle?
- .08
- .02
- .05
- .15
Show answer
Correct answer: .08
Operating with a BAC in excess of the legal limit (.08) is a criminal offense.
Source: Indiana Driver’s Manual (July 2026), page 23 · Open this page in the manual (Manual page 23)
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Which of the following are the primary factors in determining an individual’s BAC?
- The type of drink, the time of day, and the driver’s age
- The driver’s height, eye color, and driving experience
- The brand of alcohol, the driver’s gender, and the vehicle’s weight
- The amount consumed, how quickly it is consumed, and body weight
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Correct answer: The amount consumed, how quickly it is consumed, and body weight
The manual names these three as the primary factors.
Source: Indiana Driver’s Manual (July 2026), page 23 · Open this page in the manual (Manual page 23)
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When may a law enforcement officer ask a motorist to submit to a chemical test to determine the amount of alcohol in the person’s system?
- Only after the motorist has been involved in a traffic crash
- When the officer has probable cause to believe an offense was committed
- Only when the motorist is a repeat offender with a prior conviction
- At any time, even without any reason to suspect an offense
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Correct answer: When the officer has probable cause to believe an offense was committed
The officer may ask for a chemical test when there is probable cause to believe the motorist committed an offense under the listed Indiana statutes.
Source: Indiana Driver’s Manual (July 2026), page 24 · Open this page in the manual (Manual page 24)
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For how long will a motorist who fails a chemical test face a suspension of driving privileges?
- 180 days
- 30 days
- 90 days
- One year
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Correct answer: 180 days
A motorist who fails a chemical test faces a 180-day suspension.
Source: Indiana Driver’s Manual (July 2026), page 24 · Open this page in the manual (Manual page 24)
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For how long will a motorist with no previous OWI conviction who refuses a chemical test face a suspension of driving privileges?
- 180 days
- Two years
- One year
- Ten years
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Correct answer: One year
Refusing a chemical test results in a one-year suspension.
Source: Indiana Driver’s Manual (July 2026), page 24 · Open this page in the manual (Manual page 24)
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For how long will a motorist with a previous conviction for operating while intoxicated, who refuses a chemical test, face a suspension of driving privileges?
- One year
- Two years
- 180 days
- Five years
Show answer
Correct answer: Two years
A motorist with a previous intoxicated-driving conviction who refuses a chemical test faces a two-year suspension.
Source: Indiana Driver’s Manual (July 2026), page 24 · Open this page in the manual (Manual page 24)
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In addition to a probable-cause suspension, what else may a court do after a conviction for operating while intoxicated?
- Only issue a verbal warning to the driver after a first conviction
- Waive the suspension if the person pays a fine to the court
- Replace the license with a learner’s permit automatically
- Suspend the person’s driving privileges, possibly longer for repeat offenders
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Correct answer: Suspend the person’s driving privileges, possibly longer for repeat offenders
A court may suspend driving privileges after a conviction, and the periods may be longer for repeat offenders.
Source: Indiana Driver’s Manual (July 2026), page 24 · Open this page in the manual (Manual page 24)
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If an intoxicated-driving motorist is eligible, what may the court issue?
- A permanent commercial driver’s license
- A waiver of all other penalties and fines
- An order for specialized driving privileges
- A full refund of all court fees paid
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Correct answer: An order for specialized driving privileges
The manual says that if the motorist is eligible, the court may issue an order for specialized driving privileges.
Source: Indiana Driver’s Manual (July 2026), page 24 · Open this page in the manual (Manual page 24)
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What does an ignition interlock device do?
- It tests the driver’s blood alcohol level before the car can start
- It limits the vehicle’s speed to 55 miles per hour at all times
- It locks the doors while the vehicle is moving on a roadway
- It records the driver’s route on a GPS log for the court
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Correct answer: It tests the driver’s blood alcohol level before the car can start
The manual describes the ignition interlock device as mechanically testing the driver’s blood alcohol level before the car can be started.
Source: Indiana Driver’s Manual (July 2026), page 24 · Open this page in the manual (Manual page 24)
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Who may recommend a suspension of driving privileges when a driver under 18 years of age is cited for operating a vehicle while intoxicated?
- The local school board
- The driver’s parents
- The Department of Natural Resources
- The Juvenile Court
Show answer
Correct answer: The Juvenile Court
The Juvenile Court may recommend a suspension for an under-18 driver cited for intoxicated driving.
Source: Indiana Driver’s Manual (July 2026), page 24 · Open this page in the manual (Manual page 24)
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If you are convicted of operating a watercraft while intoxicated, what happens to your driving privileges?
- They are not affected, because a watercraft is not a motor vehicle
- They are subject to the same penalties as an operator of a motor vehicle
- They are suspended for a fixed 30 days only
- They are affected only if you are under 18
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Correct answer: They are subject to the same penalties as an operator of a motor vehicle
Driving privileges are subject to the same penalties as for a motor vehicle operator.
Source: Indiana Driver’s Manual (July 2026), page 24 · Open this page in the manual (Manual page 24)
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Which abilities does alcohol negatively affect, according to the manual?
- Your hearing and your sense of smell, but not your reactions
- Your brain's ability to think clearly and your physical coordination
- Your night vision, but not your coordination or thinking
- Your memory of traffic signs, but not your reaction time
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Correct answer: Your brain's ability to think clearly and your physical coordination
Alcohol negatively affects the brain's ability to think clearly and physical coordination.
Source: Indiana Driver’s Manual (July 2026), page 59 · Open this page in the manual (Manual page 59)
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Which drugs can impair your reasoning and coordination?
- Many prescription, over-the-counter, and recreational drugs
- Only illegal drugs that are taken by people under the age of 21
- Only drugs that are taken by injection rather than by mouth
- Only prescription drugs, but never over-the-counter medicine
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Correct answer: Many prescription, over-the-counter, and recreational drugs
Many prescription drugs, over-the-counter drugs, and other recreational drugs impair reasoning and coordination.
Source: Indiana Driver’s Manual (July 2026), page 59 · Open this page in the manual (Manual page 59)
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Before driving after taking a medication, what should you always do?
- Wait to see whether you feel sleepy after you start driving
- Drive only short distances at first until you know the effects
- Consult the label and ask a physician or pharmacist about side effects
- Ask a friend or passenger whether you seem alert enough
Show answer
Correct answer: Consult the label and ask a physician or pharmacist about side effects
The manual says to always consult the label on any medication and discuss its side effects with a physician or pharmacist before driving.
Source: Indiana Driver’s Manual (July 2026), page 59 · Open this page in the manual (Manual page 59)
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Which driving behavior may mean the driver is impaired?
- Signaling every turn well in advance
- Straddling the center line or weaving back and forth
- Keeping a steady distance behind the vehicle ahead
- Staying in one lane at the speed limit
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Correct answer: Straddling the center line or weaving back and forth
Straddling the center line or weaving back and forth is on the manual's list of signs of an impaired driver.
Source: Indiana Driver’s Manual (July 2026), page 59 · Open this page in the manual (Manual page 59)
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A vehicle that makes wide turns may be driven by a driver who is
- holding a learner's permit
- driving on a freeway
- using a hands-free device
- impaired by drugs or alcohol
Show answer
Correct answer: impaired by drugs or alcohol
Making wide turns is listed among the ways to spot a driver impaired by drugs or alcohol.
Source: Indiana Driver’s Manual (July 2026), page 59 · Open this page in the manual (Manual page 59)
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If a driver is suspected of drunk driving, what can refusing breath, urine, blood, or performance tests result in?
- A warning only
- Loss of driving privileges
- A requirement to attend traffic school
- A ticket with no further action
Show answer
Correct answer: Loss of driving privileges
Refusal to submit to breath, urine, blood, or performance tests can result in the loss of driving privileges.
Source: Indiana Driver’s Manual (July 2026), page 61 · Open this page in the manual (Manual page 61)
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What does the manual say about over-the-counter drugs in the tips for teen drivers?
- They never affect a driver's alertness
- Even some of them can make you drowsy
- Only prescription drugs can affect your driving
- They are safe to take before driving if you read the label
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Correct answer: Even some of them can make you drowsy
The tips warn that even some over-the-counter drugs can make you drowsy.
Source: Indiana Driver’s Manual (July 2026), page 71 · Open this page in the manual (Manual page 71)
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What do the tips for teen drivers say about riding with someone who is under the influence of drugs or alcohol?
- Ride only if the driver says he or she feels fine
- Ride only for short trips on roads you know
- Ride only if everyone in the vehicle wears a seat belt
- Do not ride with that person
Show answer
Correct answer: Do not ride with that person
The tips say not to drive under the influence or ride with anyone who is under the influence.
Source: Indiana Driver’s Manual (July 2026), page 71 · Open this page in the manual (Manual page 71)