Texas Car / Permit practice question · Alcohol & Drugs
How much alcohol may a Texas driver under age 21 have in their body while driving?
Answer choices
- none — any detectable amount is illegal (zero tolerance)— Correct answer
- up to a 0.08 BAC
- up to a 0.05 BAC
- the equivalent of one drink
Why this is the answer
Texas has a zero tolerance rule for minors. Even if you are not intoxicated under the DWI law, any detectable amount of alcohol in your system while you drive is a criminal offense for someone under 21. So the allowed amount is none, and no drink count or BAC number makes it safe.
Source: Texas Driver Handbook — Alcohol and Driving
Content reviewed against official driver handbooks · August 12, 2026
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