Driver's License Test Prep
Texas Practice DUI & Impaired Driving

What does the Texas manual say about drugs and driving generally?

  1. A.
    Only alcohol combined with drugs affects driving
  2. B.
    Only illegal drugs affect driving ability
  3. C.
    Only prescription drugs list driving warnings
  4. D.
    Any drug may affect a person's ability to drive Correct
The Why

The answer is "Any drug may affect a person's ability to drive"

The manual opens the drug chapter by stating any drug can affect driving, including over-the-counter, prescription, and illegal. The illegal-drugs-only choice comes from a driver applying anti-drug messaging they grew up on, which treats cough syrup and antihistamines as harmless behind the wheel.

Why the others miss

The traps in the wrong answers

A. Only alcohol combined with drugs affects driving

The manual states any drug on its own may affect driving, apart from any mixing with alcohol. This answer latches onto the later warning about mixing alcohol with drugs and treats it as the only situation that matters.

B. Only illegal drugs affect driving ability

The manual covers over-the-counter and prescription medications alongside illegal drugs. This answer applies public-awareness messaging that names illegal drugs alone and skips the pharmacy shelf the manual specifically flags.

C. Only prescription drugs list driving warnings

The manual specifically flags over-the-counter cold medicine and antihistamines, not only prescriptions. This answer reads the drug-warning label rule as the whole story and misses the broader coverage the manual sets out.

The Rule

This question tests your knowledge of DUI & Impaired Driving in Texas. Source: Texas Driver Manual, "Chapter 10: Alcohol and Drug Impact on the Driving Ability," p.54..

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