When a driver is approaching a high point or a place in which his field of vision is obstructed, he should:

1. Continue driving in normal speed.
2. Turn on the four winkers (distress lights) to warn other drivers.
3. Drive faster and use the road’s “hard shoulders”.
4. Correct answer: Slow down and drive at a reasonable speed, which corresponds with his field of vision.

WhyBefore a hilltop or wherever visibility is blocked, slow down to a speed that matches what you can see. You do not know what is beyond the crest.