Texas Car / Permit: Alcohol & Drugs Practice Test

Question 1

In Texas, an adult 21 or older is legally intoxicated to drive at a blood alcohol concentration (BAC) of:

Accepted Answer

0.08 or higher — For adult drivers 21 and older, the legal BAC limit is 0.08. You can also be charged if alcohol or drugs impair your normal faculties below that level.

Answer

0.02 or higher

Answer

0.04 or higher

Answer

0.05 or higher

Question 2

Which of these will actually lower a person's blood alcohol concentration after drinking?

Accepted Answer

only the passage of time — Only time lets the body remove alcohol from the blood. Coffee, a cold shower, food, or fresh air may make someone feel more awake but do not make them sober or safe to drive.

Answer

drinking a cup of strong coffee

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taking a cold shower

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eating a large meal

Question 3

Why is drinking alcohol while taking a tranquilizer or sedative especially dangerous for a driver?

Accepted Answer

Alcohol deepens the sedative's effect and can hide it, so the driver misjudges how impaired they are — Alcohol is itself a depressant, so it magnifies what a tranquilizer or barbiturate already does. It can also mask the other drug's effects, leaving the driver a poor judge of their own condition. Ask a doctor or pharmacist before mixing anything.

Answer

Alcohol cancels the medication out, leaving the condition untreated

Answer

The medication makes alcohol leave the body more slowly

Answer

The combination matters only for drivers over 65

Question 4

Under the Texas 'implied consent' law, driving on public roads means you have agreed to:

Accepted Answer

provide a breath or blood sample if you are lawfully arrested for DWI — By driving in Texas, you consent to breath or blood testing if you are lawfully arrested for DWI. Refusing leads to an automatic license suspension.

Answer

let officers search your home at any time

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pay for another driver's damages

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take a written retest each year

Question 5

What is the effect of marijuana on a person's ability to drive?

Accepted Answer

Even ordinary social amounts dull concentration, judgment, and the senses a driver depends on — Research cited by the state found that even typical social doses interfere with concentration, with judgment, and with the sensory and perceptual skills careful driving demands.

Answer

It is only a problem when combined with alcohol

Answer

It slows reactions but leaves judgment intact

Answer

It affects only people who rarely use it

Question 6

Roughly how long does a person's body need to clear the alcohol from a single drink?

Accepted Answer

About an hour — The body works through about one drink every hour, and body weight, food, and how much was consumed all shape the total. Nothing speeds the process up.

Answer

About fifteen minutes

Answer

About three hours

Answer

It depends entirely on what the person ate

Question 7

A can of beer, a glass of wine, and a mixed drink are compared. Which statement is accurate?

Accepted Answer

A 12-ounce beer, a 5-ounce glass of wine, and a mixed drink made with an ounce and a half of liquor carry about the same alcohol — Serving sizes differ precisely because the drinks differ in strength. Those three servings deliver roughly equal alcohol, so counting drinks means counting all three the same way.

Answer

Beer is so much weaker that several cans equal one mixed drink

Answer

Wine holds the least alcohol of the three

Answer

Liquor is the only one of the three that raises a BAC

Question 8

Prescription and over-the-counter medicines:

Accepted Answer

can impair driving, so you should check the label and warnings first — Many legal medicines, including cold and allergy remedies, can cause drowsiness or slow your reactions. Read the label and do not drive if it warns against operating machinery.

Answer

are always safe to take before driving

Answer

only affect driving if mixed with alcohol

Answer

improve your reaction time behind the wheel

Question 9

In Texas, having an open container of alcohol in the passenger area of your vehicle on a public road is:

Accepted Answer

illegal, even while the vehicle is stopped or parked — It is illegal to possess an open alcohol container in the passenger area of a vehicle on a public highway, whether the vehicle is moving, stopped, or parked — and this applies to passengers too.

Answer

legal as long as the driver is not the one drinking

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allowed if only passengers are drinking

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permitted on rural roads

Question 10

How much alcohol may a Texas driver under age 21 have in their body while driving?

Accepted Answer

none — any detectable amount is illegal (zero tolerance) — Texas has zero tolerance for drivers under 21. Any detectable amount of alcohol is illegal and can lead to arrest and license suspension.

Answer

up to a 0.08 BAC

Answer

up to a 0.05 BAC

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the equivalent of one drink

Texas Car / Permit: Alcohol & Drugs practice test

Study questions with answers

1. In Texas, an adult 21 or older is legally intoxicated to drive at a blood alcohol concentration (BAC) of:

2. Which of these will actually lower a person's blood alcohol concentration after drinking?

3. Why is drinking alcohol while taking a tranquilizer or sedative especially dangerous for a driver?

4. Under the Texas 'implied consent' law, driving on public roads means you have agreed to:

5. What is the effect of marijuana on a person's ability to drive?

6. Roughly how long does a person's body need to clear the alcohol from a single drink?

7. A can of beer, a glass of wine, and a mixed drink are compared. Which statement is accurate?

8. Prescription and over-the-counter medicines:

9. In Texas, having an open container of alcohol in the passenger area of your vehicle on a public road is:

10. How much alcohol may a Texas driver under age 21 have in their body while driving?

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