At dawn or dusk and in rain or snow, it can be hard to see and be seen. A good way to let other drivers know you are there is to turn:

  1. Up the instrumental panel lights.
  2. On your parking lights.
  3. On your headlights. ✓

Answer: C. On your headlights.

Turn on your headlights. The handbook says headlights help you see the road and help other drivers notice your car in bad weather and when the sun sits low.

Why this is the answer

The California handbook lists headlights for adverse weather and for making your car easier for others to notice when the sun is low. It also says that when rain or snow makes you use your windshield wipers, you must switch on low-beam headlights. Parking lights do not meet the rule: driving with just parking lights is against the law. At dawn, dusk, rain, or snow, the handbook's answer is to use your headlights.

Why the other answers are wrong

Remember it

When wipers go on or the sun is low, low-beam headlights should be on—not just parking lights.

Official handbook: California Driver Handbook (DL 600), Section 5: An Introduction to Driving, p. 11

Explanation drafted with AI (deepseek-flash) from the official handbook passage cited above, then checked automatically and by a second model on 2026-10-23. Always confirm with the official handbook.