Auto & Transport
Driving in heavy fog: what to do?
Driving in heavy fog: the right reflexes in a few simple steps.
Written by Mohamed IDBRAHIM · Updated octobre 13, 2026 · 7 min read
Immediate actions
- 1 Slow down and increase your following distance.
- 2 Use low beams and fog lights — high beams blind you in fog.
- 3 Use the right edge line as a guide if visibility is near zero.
- 4 If visibility drops too low, pull off the road and stop.
What not to do / warning
Never stop in a travel lane during fog — other drivers may not see you in time.
When a driving in heavy fog happens, the first minutes matter. Follow these steps to act safely and without panic.
What to do right now
- Slow down and increase your following distance.
- Use low beams and fog lights — high beams blind you in fog.
- Use the right edge line as a guide if visibility is near zero.
- If visibility drops too low, pull off the road and stop.
Mistakes to avoid
- Acting before removing the immediate source of danger.
- Panicking or skipping the official procedures.
- Following unverified advice from the internet.
How to prevent this in the future
Regular checks and keeping important documents and numbers in one safe place go a long way. Note the emergency number for your country and keep it visible at home.
Frequently asked questions
What should I do first?
Ensure everyone is safe, remove the source of danger, then call the relevant number or start the official procedure.
When should I call emergency services?
Whenever there is a risk to life, serious injury or a fire. When in doubt, call and let them decide.
Sources & references
- NHTSA (https://www.nhtsa.gov/)