Missouri: Alcohol and drugs — Part 1 Practice Test
Questions in this part include: “Which of these can cause your license to be revoked, suspended, or denied?” · “If you injure or kill someone because you were drinking or using drugs while driving, how much jail time may you face?”
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Questions are original and based on the official manual "Missouri Driver Guide" (Revised August 2026), Missouri Department of Revenue.
All 20 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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Which of these can cause your license to be revoked, suspended, or denied?
- Renewing your license before it expires
- Driving under the influence of alcohol or drugs
- Requesting a duplicate license at a license office
- Updating your mailing address on your driver record
Show answer
Correct answer: Driving under the influence of alcohol or drugs
Driving under the influence of alcohol or drugs is listed as a reason you can lose your license.
Source: Missouri Driver Guide (Revised August 2026), page 14 · Open this page in the manual (Manual page 14)
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You can lose your license if you do which of these?
- Request a DHH notation to be placed on your license
- Register to vote when you apply for a license
- Refuse to let a police officer test you for alcohol or drugs
- Ask a clerk to add a medical alert notation
Show answer
Correct answer: Refuse to let a police officer test you for alcohol or drugs
Refusing to let a police officer test you for alcohol or drugs is a listed reason for losing your license.
Source: Missouri Driver Guide (Revised August 2026), page 14 · Open this page in the manual (Manual page 14)
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Which of these actions involving alcohol can cost you your license?
- Showing your own valid license to a clerk when you buy alcohol legally
- Carrying your own valid license into a store that sells alcohol products
- Letting a clerk scan your own valid license when you pay for a purchase
- Changing your license information or using another person's license to buy alcohol
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Correct answer: Changing your license information or using another person's license to buy alcohol
Changing the information on your license, or using someone else's license, when you attempt to buy alcohol is a listed reason for losing your license.
Source: Missouri Driver Guide (Revised August 2026), page 15 · Open this page in the manual (Manual page 15)
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Which of these can cost you your license?
- Failing to wear a medical alert bracelet
- Failing to carry a boater safety card when driving
- Failing to ask for the optional organ donor symbol
- Failing to use an ignition interlock device when required
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Correct answer: Failing to use an ignition interlock device when required
Failing to use an ignition interlock device when required is a listed reason for losing your license.
Source: Missouri Driver Guide (Revised August 2026), page 15 · Open this page in the manual (Manual page 15)
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If you are a minor, which of these can cost you your license?
- Riding in a vehicle with a parent who drinks coffee
- Possessing any intoxicating liquor
- Standing near people who are not wearing seat belts
- Living in a household with a person who has a liquor license
Show answer
Correct answer: Possessing any intoxicating liquor
Possessing any intoxicating liquor if you are a minor is a listed reason for losing your license.
Source: Missouri Driver Guide (Revised August 2026), page 15 · Open this page in the manual (Manual page 15)
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To obtain an intermediate license, how long must you have had no alcohol-related convictions?
- The last 30 days
- The last six months
- The last two years
- The last 12 months
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Correct answer: The last 12 months
Getting an intermediate license includes having no alcohol-related convictions in the last 12 months.
Source: Missouri Driver Guide (Revised August 2026), page 16 · Open this page in the manual (Manual page 16)
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If you believe you have seen a drunk driver, what should you do?
- Follow the driver until he or she stops
- Flash your headlights at the driver
- Wait until you reach your destination to report it
- Tell the police immediately
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Correct answer: Tell the police immediately
The manual says to tell the police immediately, since you may be saving someone's life.
Source: Missouri Driver Guide (Revised August 2026), page 34 · Open this page in the manual (Manual page 34)
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Which is helpful information to give the police about a drunk driver?
- The license plate number of the vehicle
- The driver's name and date of birth
- The driver's age and occupation
- The driver's home address and phone number
Show answer
Correct answer: The license plate number of the vehicle
The manual says helpful information includes the license plate number, a physical description of the car and driver, and the vehicle's location.
Source: Missouri Driver Guide (Revised August 2026), page 34 · Open this page in the manual (Manual page 34)
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What does the manual tell you about driving when you feel tired?
- Do not drive if you feel tired
- Drive only on roads you know well
- Drive more slowly and keep going until you arrive
- Switch to high beams to stay alert
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Correct answer: Do not drive if you feel tired
The manual says to stay awake and alert and not to drive if you feel tired.
Source: Missouri Driver Guide (Revised August 2026), page 62 · Open this page in the manual (Manual page 62)
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If you injure or kill someone because you were drinking or using drugs while driving, how much jail time may you face?
- Two to seven years
- Up to 30 days
- Up to 90 days
- Ten to fifteen years
Show answer
Correct answer: Two to seven years
A driver who injures or kills someone while drinking or using drugs may spend two to seven years in jail.
Source: Missouri Driver Guide (Revised August 2026), page 67 · Open this page in the manual (Manual page 67)
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If you injure or kill someone because you were drinking or using drugs while driving, for how long may you lose your driver license?
- Six months
- Two years
- Five years
- Three years
Show answer
Correct answer: Five years
Besides jail and a fine, a driver who injures or kills someone while drinking or using drugs may lose the driver license for five years.
Source: Missouri Driver Guide (Revised August 2026), page 67 · Open this page in the manual (Manual page 67)
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If you injure or kill someone because you were drinking or using drugs while driving, what fine may you have to pay?
- $2,500
- $5,000
- $10,000
- $15,000
Show answer
Correct answer: $5,000
The penalty for injuring or killing someone while drinking or using drugs while driving may include a $5,000 fine.
Source: Missouri Driver Guide (Revised August 2026), page 67 · Open this page in the manual (Manual page 67)
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Why might a police officer ask you to walk heel to toe or stand on one leg after stopping you?
- To decide whether your vehicle needs a safety inspection
- To decide whether you must attend a hearing at once
- To decide whether your license should be renewed early
- To help decide on an arrest and a chemical test
Show answer
Correct answer: To help decide on an arrest and a chemical test
The officer uses such tests to help decide if the driver should be arrested and have a chemical test of breath, blood, or urine.
Source: Missouri Driver Guide (Revised August 2026), page 67 · Open this page in the manual (Manual page 67)
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What is the result of a chemical test of your breath, blood, or urine called?
- Your Driver Alcohol Rating level
- Your Blood Alcohol Content (BAC) level
- Your Substance Awareness test score
- Your Intoxication Point level
Show answer
Correct answer: Your Blood Alcohol Content (BAC) level
The result of the chemical test is known as the Blood Alcohol Content (BAC) level.
Source: Missouri Driver Guide (Revised August 2026), page 67 · Open this page in the manual (Manual page 67)
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After an officer takes your license because of a BAC at or above the limit and gives you a notice, after how many days will your license be suspended or revoked?
- 7 days
- 30 days
- 60 days
- 15 days
Show answer
Correct answer: 15 days
The notice tells the driver that the license will be suspended or revoked, and the driver cannot legally drive, after 15 days.
Source: Missouri Driver Guide (Revised August 2026), page 67 · Open this page in the manual (Manual page 67)
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What does the notice an officer gives after taking your license include, if the officer indicates this on the notice?
- A 15-day driving permit
- A 7-day driving permit
- A 30-day driving permit
- A 45-day driving permit
Show answer
Correct answer: A 15-day driving permit
The notice includes a 15-day driving permit that the driver can use if the officer indicates this on the notice.
Source: Missouri Driver Guide (Revised August 2026), page 67 · Open this page in the manual (Manual page 67)
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After an officer takes your license for a BAC at or above the limit, what immediate privilege may you request on the notice if you are eligible?
- A 30-day Restricted Driving Privilege
- A 15-day extension of your full license
- A 90-day Restricted Driving Privilege
- A one-year Restricted Driving Privilege
Show answer
Correct answer: A 90-day Restricted Driving Privilege
The notice allows a driver, if eligible, to request an immediate 90-day Restricted Driving Privilege (RDP).
Source: Missouri Driver Guide (Revised August 2026), page 67 · Open this page in the manual (Manual page 67)
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If you are given a hearing after an officer takes your license, until when may you continue to legally drive?
- Until 15 days after a decision is mailed to you
- Only until the date of the hearing
- Until 30 days after the hearing takes place
- Until the day a decision is mailed to you
Show answer
Correct answer: Until 15 days after a decision is mailed to you
A driver who is given a hearing may continue to legally drive until 15 days after a decision is mailed.
Source: Missouri Driver Guide (Revised August 2026), page 67 · Open this page in the manual (Manual page 67)
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What two types of actions may be taken against you for driving when you are not fit to drive?
- Civil actions and criminal actions
- Warning actions and arrest actions
- Administrative actions and court convicted actions
- Insurance actions and registration actions
Show answer
Correct answer: Administrative actions and court convicted actions
The guide says there are administrative actions and court convicted actions, which carry different penalties.
Source: Missouri Driver Guide (Revised August 2026), page 67 · Open this page in the manual (Manual page 67)
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How are you notified of when you must stop driving after a court conviction for DWI or a BAC of .08% or more?
- By a call from the Highway Patrol
- By a notice from the judge in the courtroom
- By an e-mail from the insurance company
- By mail
Show answer
Correct answer: By mail
You will be notified by mail when you must stop driving.
Source: Missouri Driver Guide (Revised August 2026), page 68 · Open this page in the manual (Manual page 68)