In dense fog you can see only about 30 m ahead. What is a sensible speed?
Answer and explanation
Correct answer: D. One that lets you stop within your view
- Step 1: You must be able to stop within your view. Step 2. Slow down until stopping distance is less than visible distance. Answer: One that lets you stop within your view. Why not the others: The usual posted limit for the road type: at the usual limit the stopping distance is longer than 30 m. A speed that keeps up with the tail lights ahead: following tail lights keeps you close to the vehicle ahead and leaves no stopping room. The posted limit reduced by 10 km/h only: a fixed reduction may still be faster than a speed from which you can stop within view.
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