Prince Edward Island Knowledge Test Coach
Speed and spaceQuestion 176 of 312

A sign shows 80 km/h. Heavy fog cuts your view of the road. What is the best speed?

  1. Exactly 80 km/h
  2. Less than 80 km/h
  3. Just above 80 km/h to keep up
  4. As fast as other cars drive
Show answer

Correct answer: Less than 80 km/h

A posted limit is a maximum for good conditions. You must slow down when you cannot see well.

Source: Prince Edward Island Driver's Handbook (revised spring 2011), Chapter 4, Speed limits: Reduce speed in poor conditions, page 85

Practice speed and space

Questions last reviewed: 18 October 2026