When does the law require a driver to “reduce the speed of a vehicle”?

1. When the driver approaches speed limit.
2. Before completing an overtaking maneuver in a two-way road.
3. Correct answer: Reduction of speed is required when there is imminent danger to life or property.
4. When the driver is tired.

WhyBy law, the duty to slow down means reducing speed, and stopping if needed, when danger is expected ahead. So answers that rule out stopping are wrong.