Texas Permit Test: Alcohol & Drugs Practice Questions

BAC limits, implied consent and DUI penalties.
Question 1
At what blood alcohol concentration (BAC) is a driver age 21 or older considered legally intoxicated in Texas?
Question 2
A 19-year-old driver has a BAC well below 0.08 but any detectable alcohol in their system. Under Texas zero tolerance, what is true?
Question 3
For Texas alcohol laws, who counts as a minor?
Question 4
Your car is parked on the side of a public highway. Is it legal to have an open container of alcohol in the passenger area?
Question 5
About how long does it take the body to get rid of the alcohol in one drink?
Question 6
What actually reduces the effects of alcohol?
Question 7
An adult arrested for DWI refuses a breath or blood test for the first time. How long will their license be suspended?
Question 8
An adult driver takes a breath test and it shows a BAC of 0.08 or higher. For a first offense, what administrative suspension can follow?
Question 9
A driver under 21 refuses to give a breath or blood specimen for the first time. What happens to their license?
Question 10
A minor's breath test shows a detectable amount of alcohol below 0.08. For a first offense, how long is the license suspended?
Question 11
What is the penalty for a minor's first conviction for driving under the influence (DUI) of alcohol?
Question 12
For an adult's first DWI conviction, what jail range applies?
Question 13
What can a driver face for DWI with a passenger younger than 15 in the vehicle?
Question 14
What kind of drug is alcohol?
Question 15
Can caffeine make a drunk driver safe to drive?

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Practice questions are written from official driver handbooks. Always check your state DMV for current rules.
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