Topic 4 · Defensive Driving and Safe Driving Practices
On packed snow you should reduce your speed by:
- 5 to 10 mph
- A quarter
- Half — correct answer
Why
Halving your speed is the figure for packed snow; ice is stricter still at no more than 5 mph. (Section 8, Slippery Roads.)
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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