Tennessee: Alcohol and drugs — Part 5 Practice Test
Questions in this part include: “What does an ignition interlock device do?” · “At what BAC can a driver who is at least 16 but not yet 21 be convicted of underage driving while impaired?”
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Questions are original and based on the official manual "Tennessee Comprehensive Driver License Manual" (March 2025 printing), Tennessee Department of Safety and Homeland Security.
All 18 questions in this practice test
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What does an ignition interlock device do?
- Keeps a car from starting if the driver's BAC is too high
- Sounds an alarm when the car exceeds the speed limit
- Locks the doors while the car is moving
- Shuts off the engine when the driver takes a phone call
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Correct answer: Keeps a car from starting if the driver's BAC is too high
An ignition interlock device keeps the car from starting if the driver's BAC is too high.
Source: Tennessee Comprehensive Driver License Manual (March 2025 printing), page 82 · Open this page in the manual (Manual page 82)
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For a first DUI offense, the restriction to driving only a motor vehicle with a functioning ignition interlock device can last how long?
- From one year to two years
- Up to three years after reinstatement
- From six months to one year
- Up to 10 years
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Correct answer: From six months to one year
The ignition interlock restriction can run six months to one year for a first offense.
Source: Tennessee Comprehensive Driver License Manual (March 2025 printing), page 82 · Open this page in the manual (Manual page 82)
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For a second DUI offense, the restriction to driving only a motor vehicle with a functioning ignition interlock device can last up to how long?
- One year
- Three years
- Five years
- 10 years
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Correct answer: Three years
The restriction can last up to three years for a second offense.
Source: Tennessee Comprehensive Driver License Manual (March 2025 printing), page 82 · Open this page in the manual (Manual page 82)
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For third and subsequent DUI offenses, the restriction to driving only a motor vehicle with a functioning ignition interlock device can last up to how long?
- One year
- Three years
- Five years
- 10 years
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Correct answer: 10 years
The restriction can last up to 10 years for third and subsequent offenses.
Source: Tennessee Comprehensive Driver License Manual (March 2025 printing), page 82 · Open this page in the manual (Manual page 82)
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A person with two DUIs in a five-year period must operate a motor vehicle with the ignition interlock device for how long after reinstatement of driving privileges?
- Six months
- Three months
- One year
- Two years
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Correct answer: Six months
A person with two DUIs in a five-year period must use the ignition interlock device for six months after driving privileges are reinstated.
Source: Tennessee Comprehensive Driver License Manual (March 2025 printing), page 82 · Open this page in the manual (Manual page 82)
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Which of these is listed as a possible expense for a person charged with DUI?
- A discount on vehicle registration
- Reduced court costs
- Increased insurance premiums
- A tax credit for treatment fees
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Correct answer: Increased insurance premiums
A DUI charge can bring costs such as bond, attorney fees, lost work time, alcohol safety courses and increased insurance premiums.
Source: Tennessee Comprehensive Driver License Manual (March 2025 printing), page 82 · Open this page in the manual (Manual page 82)
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Why is a young driver's chance of a crash much greater at a BAC between .01 and .08 percent than an older driver's?
- Young drivers always drink faster than older drivers
- Low tolerance of alcohol and limited driving experience
- Young drivers' vehicles lack safety equipment
- Young drivers are never tested for BAC
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Correct answer: Low tolerance of alcohol and limited driving experience
The manual attributes the greater risk to young drivers' low tolerance of alcohol and limited driving experience.
Source: Tennessee Comprehensive Driver License Manual (March 2025 printing), page 83 · Open this page in the manual (Manual page 83)
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If you are 18, 19 or 20 and convicted of purchasing, attempting to purchase or possessing any alcoholic beverage, how long do you lose your privilege to drive the first time?
- Six months
- Two years
- Until age 21
- One year
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Correct answer: One year
A first conviction for buying or possessing alcohol at age 18 to 20 costs you your driving privilege for one year.
Source: Tennessee Comprehensive Driver License Manual (March 2025 printing), page 83 · Open this page in the manual (Manual page 83)
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If you are 18, 19 or 20 and are convicted a second time of purchasing, attempting to purchase or possessing alcohol, how long do you lose your license?
- Two years
- One year
- Three years
- Five years
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Correct answer: Two years
A second conviction for the same alcohol violation costs you your license for two years.
Source: Tennessee Comprehensive Driver License Manual (March 2025 printing), page 83 · Open this page in the manual (Manual page 83)
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Does the law on alcohol violations by 18- to 20-year-olds apply if you were not driving or even in a vehicle?
- No, only if you were driving
- No, only if you were in a vehicle
- Yes, for any alcohol-related conviction
- Yes, but only on a second offense
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Correct answer: Yes, for any alcohol-related conviction
The law applies to any alcohol-related conviction, whether or not you were driving or even in a vehicle.
Source: Tennessee Comprehensive Driver License Manual (March 2025 printing), page 83 · Open this page in the manual (Manual page 83)
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If you are between 13 and 17 and found to have possessed, consumed or sold alcohol or drugs, how long is your driving privilege suspended for a first offense?
- Six months or until age 16, whichever is longer
- One year or until age 17, whichever is longer
- One year or until age 17, whichever is shorter
- Two years or until age 18, whichever is longer
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Correct answer: One year or until age 17, whichever is longer
A juvenile offender's driving privilege is suspended for one year or until age 17, whichever is longer.
Source: Tennessee Comprehensive Driver License Manual (March 2025 printing), page 83 · Open this page in the manual (Manual page 83)
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If you are between 13 and 17 and have a second conviction for possessing, consuming or selling alcohol or drugs, how long is the suspension?
- One year or until age 17, whichever is longer
- Two years or until age 18, whichever is shorter
- Three years or until age 21
- Two years or until age 18, whichever is longer
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Correct answer: Two years or until age 18, whichever is longer
A second juvenile conviction means a suspension of two years or until age 18, whichever is longer.
Source: Tennessee Comprehensive Driver License Manual (March 2025 printing), page 83 · Open this page in the manual (Manual page 83)
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A 15-year-old who has never been licensed is found to have possessed alcohol. What can happen to the teen's driving privilege?
- The teen could lose the privilege to drive until reaching age 17
- Nothing, since only licensed drivers can lose a privilege
- The teen can never apply for a license
- The teen loses the privilege only until age 16
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Correct answer: The teen could lose the privilege to drive until reaching age 17
Even a person who has never been licensed could lose the privilege to drive until reaching age 17.
Source: Tennessee Comprehensive Driver License Manual (March 2025 printing), page 83 · Open this page in the manual (Manual page 83)
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At what BAC can a driver who is at least 16 but not yet 21 be convicted of underage driving while impaired?
- .04 percent
- .05 percent
- .02 percent
- .08 percent
Show answer
Correct answer: .02 percent
A driver aged 16 to 20 with a BAC of .02 percent can be convicted of underage driving while impaired.
Source: Tennessee Comprehensive Driver License Manual (March 2025 printing), page 83 · Open this page in the manual (Manual page 83)
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What happens to your license when you are convicted of underage driving while impaired?
- You lose it for six months
- You lose it for one year
- You lose it for two years
- It is suspended until age 21
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Correct answer: You lose it for one year
A conviction for underage driving while impaired means losing your license for one year, plus a fine.
Source: Tennessee Comprehensive Driver License Manual (March 2025 printing), page 83 · Open this page in the manual (Manual page 83)
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What fine applies to a conviction for underage driving while impaired?
- $100
- $500
- $1,000
- $250
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Correct answer: $250
The penalty for underage driving while impaired includes a fine of $250.
Source: Tennessee Comprehensive Driver License Manual (March 2025 printing), page 83 · Open this page in the manual (Manual page 83)
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What is a designated driver?
- A friend who agrees ahead of time to remain strictly sober
- The person in the group who has drunk the least
- Whoever feels least impaired at the end of the night
- A person who limits drinking to two drinks
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Correct answer: A friend who agrees ahead of time to remain strictly sober
In the designated driver concept, friends agree ahead of time which person will remain strictly sober.
Source: Tennessee Comprehensive Driver License Manual (March 2025 printing), page 83 · Open this page in the manual (Manual page 83)
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What do many night clubs offer the designated driver?
- A free taxi ride home
- Free parking
- Free non-alcoholic drinks all evening
- A discount on all alcoholic drinks
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Correct answer: Free non-alcoholic drinks all evening
Many night clubs give the designated driver free non-alcoholic beverages for the evening.
Source: Tennessee Comprehensive Driver License Manual (March 2025 printing), page 83 · Open this page in the manual (Manual page 83)