Topic 6 · Alcohol, Drugs, and Driving (DUI Laws)
Which of the following substances can lead to a DUI if they impair your ability to drive?
- Only illegal drugs
- Alcohol, marijuana, prescription medications — correct answer
- Only alcohol
Why
The law covers alcohol, cannabis, illegal drugs, prescriptions and over-the-counter medicines alike. (Handbook, Section 9.)
Practise this in the real format
Reading one answer is not the same as sitting the test. The simulator runs the first-time adult form: 36 questions, 6 mistakes allowed, 83% to pass.
Source: California Driver's Handbook (DL 600, rev. 6/2025), the document the DMV writes the real test from. Edited by Fernando Aguilera. Aprobify is not affiliated with the California DMV.
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