Missouri Car / Permit: Alcohol & Drugs Practice Test

Question 1

Now that medical marijuana is legal in Missouri, what is the rule about driving after using it?

Accepted Answer

It is never legal or safe to drive while impaired by marijuana — Even with legal medical marijuana, driving under its influence remains illegal and unsafe because it impairs judgment and coordination.

Answer

You may drive if you hold a medical card

Answer

You may drive as long as you feel fine

Answer

It is allowed during daytime only

Question 2

For a driver 21 or older, at what blood alcohol content (BAC) is it illegal to drive in Missouri?

Accepted Answer

0.08% or more — It is illegal to drive with a BAC of 0.08% or higher for adult drivers.

Answer

0.10% or more

Answer

0.05% or more

Answer

0.02% or more

Question 3

According to the Missouri guide, how much alcohol can begin to affect your ability to drive safely?

Accepted Answer

Even a small amount, including a single drink — Even one drink can affect your driving, and two drinks may put many people over the legal limit.

Answer

Only after four or more drinks

Answer

Alcohol has no effect below the legal limit

Answer

Only hard liquor, not beer or wine

Question 4

A driver under 21 can face an alcohol-related license action at what BAC level?

Accepted Answer

More than 0.02% — For drivers under 21, a BAC over 0.02% can trigger an intoxication-related offense and license action.

Answer

0.08% or more

Answer

0.05% or more

Answer

0.10% or more

Question 5

To have your license reinstated after an intoxication-related offense, one requirement is to do what?

Accepted Answer

Complete a Substance Awareness Traffic Offender Program (SATOP) or comparable program — Reinstatement after an intoxication-related offense requires completing SATOP, paying the fee, and filing proof of insurance for two years.

Answer

Pass a second road-sign test only

Answer

Wait five years with no action

Answer

Pay a single one-dollar fee

Question 6

A first DWI conviction in Missouri can bring which penalty?

Accepted Answer

Up to six months in jail and a fine of up to $500 — A first DWI conviction carries up to six months in jail and a fine of up to $500, along with license action.

Answer

A mandatory five-year prison term

Answer

Only a written warning

Answer

A $10,000 fine and nothing else

Question 7

A first Minor in Possession (MIP) offense carries what license consequence?

Accepted Answer

A 30-day suspension — A first MIP offense results in a 30-day license suspension; later offenses bring longer suspensions or revocation.

Answer

A one-year revocation

Answer

No license action at all

Answer

A 90-day suspension

Question 8

If a police officer stops you and you refuse to take a chemical test of your breath, blood, or urine, what happens to your license?

Accepted Answer

It will be taken away for one year — Refusing the chemical test results in your driver license being taken away for one year.

Answer

Nothing changes until a court hearing

Answer

It is suspended for only 30 days

Answer

You simply pay a small fine

Question 9

Under Missouri's 'Abuse and Lose' law, a driver younger than 21 can lose their license for how long for an alcohol- or drug-related offense?

Accepted Answer

90 days — The 'Abuse and Lose' law can take a driver under 21's license away for 90 days for alcohol- or drug-related offenses.

Answer

One week

Answer

Two years

Answer

Ten days

Question 10

When your BAC is measured at 0.08% or higher, the officer takes your license and gives you a notice. When does the suspension or revocation begin?

Accepted Answer

After 15 days, and the notice can serve as a temporary permit — The notice tells you the action takes effect after 15 days and includes a 15-day driving permit while you decide to request a hearing.

Answer

Immediately, with no grace period

Answer

After 30 days

Answer

Only after a court trial months later

Question 11

Can you be charged with DWI for driving while impaired by legal prescription or over-the-counter medicine?

Accepted Answer

Yes, any drug that impairs your driving can lead to a DWI — The law does not distinguish among prescription, over-the-counter, and illegal drugs; if a medication impairs you, driving is illegal.

Answer

No, only illegal drugs count

Answer

No, if a doctor prescribed it

Answer

Only if you also drank alcohol

Question 12

While operating a commercial vehicle, a driver is over the legal limit at what BAC?

Accepted Answer

0.04% — Commercial vehicle drivers are considered legally impaired at a BAC of 0.04% or higher.

Answer

0.08%

Answer

0.10%

Answer

0.02%

Alcohol & Drugs

Study questions with answers

1. Now that medical marijuana is legal in Missouri, what is the rule about driving after using it?

2. For a driver 21 or older, at what blood alcohol content (BAC) is it illegal to drive in Missouri?

3. According to the Missouri guide, how much alcohol can begin to affect your ability to drive safely?

4. A driver under 21 can face an alcohol-related license action at what BAC level?

5. To have your license reinstated after an intoxication-related offense, one requirement is to do what?

6. A first DWI conviction in Missouri can bring which penalty?

7. A first Minor in Possession (MIP) offense carries what license consequence?

8. If a police officer stops you and you refuse to take a chemical test of your breath, blood, or urine, what happens to your license?

9. Under Missouri's 'Abuse and Lose' law, a driver younger than 21 can lose their license for how long for an alcohol- or drug-related offense?

10. When your BAC is measured at 0.08% or higher, the officer takes your license and gives you a notice. When does the suspension or revocation begin?

11. Can you be charged with DWI for driving while impaired by legal prescription or over-the-counter medicine?

12. While operating a commercial vehicle, a driver is over the legal limit at what BAC?

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