Speed and followingQuestion 120 of 296

The posted limit is 80 km/h. Fog makes it hard to see. What speed is right?

  1. 80 km/h, because that is the legal limit
  2. A careful speed that suits the fog, which may be well below 80 km/h
  3. 80 km/h, if you use your high beams
  4. A speed a little above 80 km/h to leave the fog sooner
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Correct answer: A careful speed that suits the fog, which may be well below 80 km/h

The posted limit is a maximum. You must drive at a careful and prudent speed for weather, visibility, traffic, and the road.

Source: Traffic Safety Act (S.N.S. 2025, c. 20), in force 19 October 2026, Section 186, Careful and prudent speed

Practice speed and following

Questions last reviewed: 18 October 2026