In heavy fog, the best headlights to use are:

• A.High beams
• B.Parking lights only
• C.No lights, to avoid glare
• D.Low beams

Why

High beams reflect off fog and make it harder to see. Use low beams, slow down, and be ready to pull completely off the road if visibility gets too poor.

Manual topic: California Driver Handbook - Driving in Fog · From the California Learner's Permit (Car) practice bank (CAC-168).

Practice the full California Learner's Permit (Car) test

More Adverse Conditions & Emergencies questions

• At night, you must dim your high beams when an oncoming vehicle is within:
• When following another vehicle at night, dim your high beams when you are within:
• California law requires you to turn on your headlights whenever:
• A wet road is most slippery:
• On a wet road, the most important adjustment is to: