In which cases are you legally obliged to slow down?

1. Correct answer: When the road is obstructed, or having poor visibility or sharp bends.
2. Before and during overtaking, for increased safety.
3. In a place that is shaded by a boulevard of high trees.
4. When you approach a place in which delinquent activity might take place.

WhyThe law requires you to slow down on a congested road, in poor visibility and on sharp bends. Shade from trees is not one of them.