Why should you reduce speed when driving in fog, even if you cannot see any other vehicles nearby?

Pick an answer

1. Reducing speed in fog is only a legal requirement, not an actual safety benefit, though that is not correct
2. Fog has no real effect on stopping distance
3. Fog only affects visibility for pedestrians, not drivers
4. Fog reduces how far ahead you can see, which shortens the distance you have to react to a hazard

Correct!

Not quite. The correct answer is highlighted.