Topic 4 · Defensive Driving and Safe Driving Practices
In extremely dense fog, if visibility is near zero, you should:
- Find a safe place to pull off the road and turn on your emergency flashers — correct answer
- Keep driving slowly in your lane
- Use high beams to see better
Why
Pull completely off the road and turn on your emergency flashers so others can see you, then wait for conditions to improve. (Handbook, Section 8 — Fog or Heavy Smoke.)
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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