Missouri: Alcohol and drugs — Part 3 Practice Test
Questions in this part include: “What is the driver license suspension for a first Minor in Possession (MIP) offense?” · “When an ignition interlock device is required for reinstatement, during which period must there be no violations?”
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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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What is the driver license suspension for a first Minor in Possession (MIP) offense?
- 30-day suspension
- 15-day suspension
- 60-day suspension
- One-year revocation
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Correct answer: 30-day suspension
For Minor in Possession, the penalty is a 30-day suspension for a first offense.
Source: Missouri Driver Guide (Revised August 2026), page 69 · Open this page in the manual (Manual page 69)
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What is the driver license penalty for a second Minor in Possession (MIP) offense?
- 30-day suspension
- 60-day suspension
- 90-day suspension
- One-year revocation
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Correct answer: 90-day suspension
For Minor in Possession, the penalty is a 90-day suspension for a second offense.
Source: Missouri Driver Guide (Revised August 2026), page 69 · Open this page in the manual (Manual page 69)
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What is the driver license penalty for a third Minor in Possession (MIP) offense?
- 30-day suspension
- One-year revocation
- Six-month suspension
- Two-year revocation
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Correct answer: One-year revocation
For Minor in Possession, the penalty is a one-year revocation for a third offense.
Source: Missouri Driver Guide (Revised August 2026), page 69 · Open this page in the manual (Manual page 69)
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What happens to your driver license if a police officer stops you and you refuse to take a chemical test to determine your BAC?
- It is taken away for 30 days
- It is taken away for 90 days
- It is taken away for one year
- It is taken away for five years
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Correct answer: It is taken away for one year
Refusing a chemical test of your BAC results in the driver license being taken away for one year.
Source: Missouri Driver Guide (Revised August 2026), page 70 · Open this page in the manual (Manual page 70)
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Which program must you show you completed to have your license reinstated after an intoxication-related offense?
- Substance Awareness Traffic Offender Program (SATOP)
- Alcohol Safety Awareness Offender Program (ASAOP)
- Driver Improvement Traffic Offender Program (DITOP)
- Highway Safety Awareness Course Program (HSACP)
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Correct answer: Substance Awareness Traffic Offender Program (SATOP)
Reinstatement requires a form showing completion of a Substance Awareness Traffic Offender Program (SATOP) or comparable program.
Source: Missouri Driver Guide (Revised August 2026), page 70 · Open this page in the manual (Manual page 70)
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For reinstatement, an ignition interlock device must be installed if you had an alcohol conviction with a BAC of at least what level?
- .04%
- .10%
- .15%
- .20%
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Correct answer: .15%
An IID is required if there was more than one intoxication-related contact, or an alcohol conviction with a BAC of .15% or higher or property damage or bodily harm.
Source: Missouri Driver Guide (Revised August 2026), page 70 · Open this page in the manual (Manual page 70)
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To which parts of the vehicle is an ignition interlock device (IID) connected?
- The ignition, brakes, and turn signals
- The ignition, horn, and headlights
- The ignition, fuel pump, and windshield wipers
- The ignition, steering wheel, and seat belts
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Correct answer: The ignition, horn, and headlights
An IID is a mechanical unit connected to the vehicle’s ignition, horn, and headlights.
Source: Missouri Driver Guide (Revised August 2026), page 70 · Open this page in the manual (Manual page 70)
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What does an ignition interlock device (IID) measure?
- The concentration of alcohol in a person’s blood sample
- The driver’s heart rate while the vehicle is moving
- The driver’s reaction time at each start
- The concentration of alcohol in a person’s breath
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Correct answer: The concentration of alcohol in a person’s breath
An IID measures the concentration of alcohol in a person’s breath.
Source: Missouri Driver Guide (Revised August 2026), page 70 · Open this page in the manual (Manual page 70)
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When does an ignition interlock device require the vehicle operator to provide a breath sample?
- Only before starting the vehicle each time it is used
- Before starting the vehicle and periodically during operation
- Only when a police officer stops the vehicle on the road
- Only at the monthly service visit, never while driving
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Correct answer: Before starting the vehicle and periodically during operation
The IID requires a breath sample before starting the vehicle and periodically during the operation of the vehicle.
Source: Missouri Driver Guide (Revised August 2026), page 70 · Open this page in the manual (Manual page 70)
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For how long must an ignition interlock device be maintained when it is required for reinstatement?
- At least 30 days from the reinstatement date
- At least 90 days from the reinstatement date
- At least two years from the reinstatement date
- At least six months from the reinstatement date
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Correct answer: At least six months from the reinstatement date
The IID must be maintained for a minimum of six months from the reinstatement date.
Source: Missouri Driver Guide (Revised August 2026), page 70 · Open this page in the manual (Manual page 70)
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When an ignition interlock device is required for reinstatement, during which period must there be no violations?
- The last three months
- The first month
- The first three months
- The entire first year
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Correct answer: The last three months
The IID must be maintained for at least six months without any violations in the last three months.
Source: Missouri Driver Guide (Revised August 2026), page 70 · Open this page in the manual (Manual page 70)
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How often must a required ignition interlock device be serviced?
- Every week
- Every six months
- Every month
- Once a year
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Correct answer: Every month
The driver must pay for having the device installed and for having it serviced every month.
Source: Missouri Driver Guide (Revised August 2026), page 70 · Open this page in the manual (Manual page 70)
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What happens to your driving privilege if you fail to maintain a required ignition interlock device?
- It is re-suspended
- It is canceled permanently
- It is changed to a learner permit
- It stays valid with a warning
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Correct answer: It is re-suspended
If you fail to maintain the IID, your driving privilege will be re-suspended.
Source: Missouri Driver Guide (Revised August 2026), page 70 · Open this page in the manual (Manual page 70)
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Besides driver licensing requirements, what may a court impose for a first DWI conviction?
- A mandatory vehicle sale
- A permanent license plate change
- Use of an ignition interlock device
- A required move to another county
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Correct answer: Use of an ignition interlock device
A court may impose other requirements such as IID use for the first DWI conviction.
Source: Missouri Driver Guide (Revised August 2026), page 70 · Open this page in the manual (Manual page 70)
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What happens if you are convicted in court of failing to have a legally required ignition interlock device installed?
- Your driving privilege is revoked for 30 days
- Your driving privilege is revoked for one year
- Your driving privilege is suspended for 90 days
- Your driving privilege is revoked for five years
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Correct answer: Your driving privilege is revoked for one year
A conviction for failing to have a required IID revokes the driving privilege for one year.
Source: Missouri Driver Guide (Revised August 2026), page 70 · Open this page in the manual (Manual page 70)
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How long is your driving privilege taken away for a second conviction of failing to have a required ignition interlock device?
- One year
- Two years
- Ten years
- Five years
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Correct answer: Five years
A second offense of failing to have a required IID requires the driving privilege to be taken away for five years.
Source: Missouri Driver Guide (Revised August 2026), page 70 · Open this page in the manual (Manual page 70)
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Which statement about medicine and DWI in Missouri is correct?
- DWI applies only to alcohol and illegal drugs
- An over-the-counter medicine that impairs driving can lead to DWI
- Medicine taken as directed can never lead to a DWI charge
- Only prescription medicine can lead to a DWI charge
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Correct answer: An over-the-counter medicine that impairs driving can lead to DWI
A person can be charged with DWI for impairment by alcohol, illegal drugs, prescription medication, over-the-counter medication, or any combination.
Source: Missouri Driver Guide (Revised August 2026), page 71 · Open this page in the manual (Manual page 71)
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How do Missouri DWI penalties compare when the impairment is from drugs rather than alcohol?
- They are lighter for prescription drugs
- They are heavier for drugs than for alcohol
- They apply only to illegal drugs
- They are exactly the same
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Correct answer: They are exactly the same
The penalties for DWI are exactly the same regardless of whether the impairment is from drugs or alcohol.
Source: Missouri Driver Guide (Revised August 2026), page 71 · Open this page in the manual (Manual page 71)
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Which effect of alcohol on vision does the guide list?
- It can impair night vision
- It can widen side vision
- It can sharpen color perception
- It can improve night vision
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Correct answer: It can impair night vision
Alcohol can affect vision, including slowing eye muscle function, altering visual perception, and impairing night vision.
Source: Missouri Driver Guide (Revised August 2026), page 71 · Open this page in the manual (Manual page 71)
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How does alcohol affect your reflexes?
- It speeds them up
- It sharpens them briefly
- It slows them
- It does not change them
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Correct answer: It slows them
Alcohol slows reflexes and decreases reaction time, making it unsafe to react quickly to situations.
Source: Missouri Driver Guide (Revised August 2026), page 71 · Open this page in the manual (Manual page 71)