Topic 6 · Alcohol, Drugs, and Driving (DUI Laws)
How might fatigue affect driving?
- It can impair driving similar to alcohol — correct answer
- It has no effect
- It always makes you more alert
Why
Fatigue degrades reaction time, judgment and attention in much the same way alcohol does — and unlike alcohol, there is no legal threshold to warn you.
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.
More from Alcohol, Drugs, and Driving (DUI Laws)
- Can a driver under 21 carry alcohol in a vehicle if an adult is with them?
- If an officer observes slurred speech, red eyes, and smell of alcohol, what might they do?
- Which can law enforcement use to detect drug impairment?
- Which group is at greater risk from alcohol due to lower body weight and experience?
- What happens if you are convicted of a second DUI offense in California?
- What is the impact of stimulants like methamphetamine on driving?