Topic 6 · Alcohol, Drugs, and Driving (DUI Laws)
What is one effect of combining alcohol with other drugs?
- It has no effect
- Impairment is reduced
- Impairment is increased, possibly more than either alone — correct answer
Why
The combination is not additive but multiplying: together they can impair you far more than either would on its own.
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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