Tennessee: Alcohol and drugs — Part 6 Practice Test
Questions in this part include: “What does the manual say about alcohol-related crashes?” · “About how long does it take to cancel the intoxicating effects of three drinks?”
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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
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 does the manual say about alcohol-related crashes?
- They are unavoidable accidents
- They are not accidents; they can be prevented
- They happen only to heavy drinkers
- They are mainly caused by road conditions
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Correct answer: They are not accidents; they can be prevented
Alcohol-related crashes can be prevented, so they are not accidents.
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 planning a night on the town, when should you decide that you are not going to drive?
- After your first drink
- When you start to feel impaired
- When you are ready to go home
- Before you start drinking
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Correct answer: Before you start drinking
The decision should be made before drinking, because alcohol affects your judgment and it is much harder to decide after one or two drinks.
Source: Tennessee Comprehensive Driver License Manual (March 2025 printing), page 83 · Open this page in the manual (Manual page 83)
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Which of these is a tip from the manual for keeping from drinking and driving?
- Give your vehicle keys to someone who isn't drinking before you start
- Drink plenty of black coffee for an hour before you drive home
- Drive home slowly on back roads after you have been drinking
- Wait for the alcohol to wear off at the next stop light
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Correct answer: Give your vehicle keys to someone who isn't drinking before you start
Handing your keys to someone who isn't drinking and who won't let you drive after drinking is one of the manual's tips.
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 someone offers you a drink and you plan to drive, what does the manual suggest you simply say?
- “Just one, then I'll wait.”
- “Maybe later, after I eat.”
- “No thanks, I'm driving.”
- “I'll have a small one.”
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Correct answer: “No thanks, I'm driving.”
The manual suggests politely declining the drink by saying you are driving.
Source: Tennessee Comprehensive Driver License Manual (March 2025 printing), page 83 · Open this page in the manual (Manual page 83)
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The amount of alcohol in one 12-ounce bottle of beer is about equal to that in what?
- A half-ounce shot of whiskey
- A 1-ounce shot of whiskey
- A 2-ounce shot of whiskey
- A 4-ounce shot of whiskey
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Correct answer: A 1-ounce shot of whiskey
One 12-ounce bottle of beer holds about as much alcohol as a 1-ounce shot of whiskey.
Source: Tennessee Comprehensive Driver License Manual (March 2025 printing), page 83 · Open this page in the manual (Manual page 83)
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When alcohol is consumed and quickly reaches the brain, which parts does it short-circuit?
- Parts that control hearing, taste and the sense of smell
- Parts that control digestion, sleep and breathing
- Parts that control hunger, thirst and body temperature
- Parts that control judgment, emotions and confidence
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Correct answer: Parts that control judgment, emotions and confidence
Alcohol quickly reaches the brain and short-circuits the parts controlling judgment, emotions and confidence.
Source: Tennessee Comprehensive Driver License Manual (March 2025 printing), page 83 · Open this page in the manual (Manual page 83)
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According to reliable research studies, how many drinks of alcohol in three hours or less impair the driving ability of most individuals?
- Two or three
- Five or six
- Seven or eight
- Ten or more
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Correct answer: Two or three
Two or three drinks in three hours or less impair the driving ability of most people.
Source: Tennessee Comprehensive Driver License Manual (March 2025 printing), page 83 · Open this page in the manual (Manual page 83)
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About how long does it take to cancel the intoxicating effects of three drinks?
- About one hour
- About ninety minutes
- About three hours
- About six hours
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Correct answer: About three hours
It takes about one hour to cancel the effects of one drink and about three hours for three drinks.
Source: Tennessee Comprehensive Driver License Manual (March 2025 printing), page 83 · Open this page in the manual (Manual page 83)
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Possession by a driver of at least how many grams of methamphetamine in a vehicle is listed as a reason a Tennessee license may be revoked or suspended?
- Five grams
- One gram
- Two grams
- Ten grams
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Correct answer: Five grams
The manual lists possession by a driver of five or more grams of methamphetamine in a vehicle as a reason for revocation or suspension.
Source: Tennessee Comprehensive Driver License Manual (March 2025 printing), page 85 · Open this page in the manual (Manual page 85)
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A Tennessee license may be revoked or suspended for purchasing or possessing any alcoholic beverage if the person is under what age?
- 18
- 19
- 21
- 25
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Correct answer: 21
Purchasing or possessing any alcoholic beverage while under 21 years old is listed as a reason for losing the license.
Source: Tennessee Comprehensive Driver License Manual (March 2025 printing), page 85 · Open this page in the manual (Manual page 85)
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For a person under 18, a drug or alcohol conviction can cost driving privileges:
- Only if the offense occurred while driving a car
- Whether or not it occurred while driving
- Only if it is a second or later conviction
- Only if a motor vehicle was involved in it
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Correct answer: Whether or not it occurred while driving
For persons under 18, a conviction of any drug or alcohol offense can cost driving privileges whether or not the offense happened while driving.
Source: Tennessee Comprehensive Driver License Manual (March 2025 printing), page 85 · Open this page in the manual (Manual page 85)
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After a conviction for DUI, who may issue an order for a restricted license?
- The driver's insurance company
- The county clerk
- The trial judge
- The local police chief
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Correct answer: The trial judge
After a DUI conviction the trial judge may issue an order for a restricted license.
Source: Tennessee Comprehensive Driver License Manual (March 2025 printing), page 86 · Open this page in the manual (Manual page 86)
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A DUI restricted license is not an option for a driver with a prior conviction of DUI or adult driving while impaired within how many years?
- 3 years
- 10 years
- 5 years
- 7 years
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Correct answer: 10 years
The DUI restricted license is not available to drivers with a prior DUI or adult driving-while-impaired conviction within 10 years.
Source: Tennessee Comprehensive Driver License Manual (March 2025 printing), page 88 · Open this page in the manual (Manual page 88)
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After the first year of a two-year revocation, a driver may apply for a restricted license if the driver installs what on the vehicle?
- A speed governor on the engine
- A dash camera facing the road
- A steering wheel lock bar
- An ignition interlock device
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Correct answer: An ignition interlock device
After the first year of a two-year revocation, drivers may apply for a restricted license if an ignition interlock device is installed for the remaining revocation period.
Source: Tennessee Comprehensive Driver License Manual (March 2025 printing), page 88 · Open this page in the manual (Manual page 88)
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How many copies of the court order must a DUI restricted license applicant submit at the driver license station?
- Two
- One
- Three
- Four
Show answer
Correct answer: Two
These applicants submit two copies of the court order and proof of insurance (SR-22).
Source: Tennessee Comprehensive Driver License Manual (March 2025 printing), page 88 · Open this page in the manual (Manual page 88)
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If you drink alcohol, even a little, how do your chances of being in a collision compare with not drinking?
- Much greater
- Slightly greater only after several drinks
- The same for experienced drivers
- Lower, because you drive more carefully
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Correct answer: Much greater
Even a little alcohol makes a collision much more likely.
Source: Tennessee Comprehensive Driver License Manual (March 2025 printing), page 99 · Open this page in the manual (Manual page 99)
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Who can drive safely when “buzzed” or impaired by alcohol or drugs?
- Only drivers with many years of experience
- Drivers who drive slowly and carefully
- Anyone who has eaten a meal first
- No one, regardless of skill or driving experience
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Correct answer: No one, regardless of skill or driving experience
The manual says no one can drive safely when impaired, however skilled or experienced.
Source: Tennessee Comprehensive Driver License Manual (March 2025 printing), page 99 · Open this page in the manual (Manual page 99)
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Which crucial driving decisions does alcohol affect a person’s ability to make?
- Braking, steering and changing lanes
- Only hearing a siren and reading road signs
- Only judging the weather and picking a route
- Only starting and parking the vehicle
Show answer
Correct answer: Braking, steering and changing lanes
Alcohol affects crucial driving decisions such as braking, steering and changing lanes.
Source: Tennessee Comprehensive Driver License Manual (March 2025 printing), page 108 · Open this page in the manual (Manual page 108)