When you are driving behind another vehicle:

1. While driving uphill – keep a small distance; while driving downhill – keep double distance.
2. Correct answer: Keep a safe distance from the vehicle in front of you, to prevent an accident.
3. Keep a smaller distance from the vehicle in front of you.
4. Keep a larger distance from the vehicle in front of you only when a “general danger” road sign is placed.

WhyKeep a safe distance from the vehicle in front so you can stop in time if it brakes. That is what prevents a rear-end collision.