What does it mean to over-drive your headlights?

• Driving at a speed where your stopping distance is further than the distance illuminated by your headlights.
  Explanation:

  "Over-driving your headlights" means traveling so fast that your vehicle's total stopping distance (the time to react plus the time to brake) is longer than the distance your headlights allow you to see ahead. This is a major safety hazard because if an obstacle suddenly appears at the edge of your light beam, you will hit it before you can come to a complete stop. To stay safe, you must always be able to stop within the area clearly lit by your headlights."
• Driving at a speed where you can safely stop within the distance you can see with your headlights.
• Driving so you can stop within the distance illuminated by traffic lights.
• None of the above.