If bad weather makes it difficult for you to see clearly, you should:

  1. Speed up to get off the road quickly.
  2. Drive in the lane closest to oncoming traffic.
  3. Increase your following distance. ✓

Answer: C. Increase your following distance.

Increase your following distance when bad weather makes it hard to see clearly.

Why this is the answer

The handbook's advice for driving in heavy fog or smoke says to increase your following distance, along with slowing down and making sure you can stop within the space you can see ahead. When visibility is poor, extra space ahead gives you more room to react to what you cannot see clearly. That supports increasing following distance rather than speeding up or moving toward oncoming traffic.

Why the other answers are wrong

Remember it

In poor visibility, remember: slow down and leave more room ahead.

Official handbook: California Driver Handbook (DL 600), Section 8: Safe Driving, p. 64

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.