Alaska Car / Permit practice
Alaska Car / Permit: Alcohol & Drugs 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
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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.
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1. What is Alaska's implied consent law?
Correct answer: Driving in the state means you have consented to a chemical test of your breath
By driving or operating a vehicle in Alaska you have already agreed to a chemical test of your breath so the alcohol concentration in your blood or breath can be determined.
Source: Alaska Driver Manual — Implied Consent
2. How long must an ignition interlock device stay installed after a first DUI or refusal conviction in Alaska?
Correct answer: 6 months
A single conviction requires the device for at least six months, with the required period growing for each additional conviction. The driver pays for installation and upkeep.
Source: Alaska Driver Manual — Ignition Interlock Device (IID)
3. Under Alaska's implied consent law, when may an officer require a blood or urine sample?
Correct answer: After a crash that kills or seriously injures someone else
Blood or urine testing for alcohol or controlled substances can be required when you have been in a crash that kills another person or causes serious physical injury.
Source: Alaska Driver Manual — The Implied Consent Law Allows
4. How long is the administrative revocation for a first DUI or refusal in Alaska?
Correct answer: 90 days
A first occurrence brings a 90-day revocation. It climbs to a year with one prior conviction, three years with two, and five years with three or more.
Source: Alaska Driver Manual — Administrative Revocations
5. What does the Alaska manual say about mixing alcohol with medication?
Correct answer: The combination strengthens the effect of each, and many prescriptions interact with alcohol
Combining the two increases the effect of each drug, and it has been estimated that a quarter or more of prescription medicines in use today can react with alcohol, which is why caution is essential if you are driving.
Source: Alaska Driver Manual — Drugs
6. At what breath or blood alcohol concentration is an Alaska driver presumed to be driving under the influence?
Correct answer: .08
Operating with a concentration of .08 or above creates the legal presumption of driving under the influence. Behind the wheel of a commercial vehicle the administrative threshold drops to .04.
Source: Alaska Driver Manual — Administrative Revocations
7. How far back does Alaska look at prior DUI or refusal convictions when setting a revocation period?
Correct answer: 15 years
Convictions for driving while intoxicated or for refusal, whether they happened in Alaska or another state, count toward the revocation period if they fall within the last 15 years.
Source: Alaska Driver Manual — Administrative Revocations
8. How does the Alaska manual classify alcohol?
Correct answer: A depressant that slows reflexes and clouds judgment
Alcohol is a depressant rather than a stimulant. It slows normal reflexes, clouds judgment, cuts alertness and damages vision.
Source: Alaska Driver Manual — Facts You Should Know About Alcohol
9. What does the Alaska manual say will sober up a driver who has been drinking?
Correct answer: Time and nothing else
Nothing but the passage of time. A cold shower, fresh air, black coffee or a snack may make someone feel more alert, but only the liver’s slow work removes the alcohol.
Source: Alaska Driver Manual — Facts You Should Know About Alcohol
10. What does Alaska law say about operating a vehicle while impaired by a controlled substance?
Correct answer: It covers any controlled substance and carries the same penalties as an alcohol DUI
State law forbids operating a vehicle while impaired by any controlled substance, narcotic or otherwise, and the penalties match those set for an alcohol offense.
Source: Alaska Driver Manual — Drugs
11. Which ability does the Alaska manual say alcohol impairs first?
Correct answer: Judgment
Judgment is the first thing to go when a person drinks, which is part of why drinkers feel confident that their driving is unaffected.
Source: Alaska Driver Manual — Facts You Should Know About Alcohol
12. How does Alaska treat refusal of the portable preliminary breath test at the scene?
Correct answer: It is an infraction
An officer with probable cause to think alcohol has impaired you after a crash or a moving violation can ask for a sample on a portable instrument, and turning that request down is an infraction.
Source: Alaska Driver Manual — Implied Consent
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Every Alaska question is written from the official Alaska 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