What does "overdriving your headlights" mean?

"Overdriving your headlights" refers to the situation where a driver is traveling at a speed that exceeds their ability to stop safely within the distance that their headlights illuminate. When you drive at a higher speed, the distance you can see ahead is limited to the reach of your headlights. If you are going too fast, you may not be able to react in time to an obstacle or a hazard in the roadway, since the area illuminated will not provide sufficient advance warning for safe stopping.

Maintaining a speed that allows you to stop safely within the lighted area is crucial for nighttime driving, ensuring that you have adequate time to recognize and respond to unforeseen situations. This concept emphasizes the importance of adjusting your speed to the visibility conditions to prevent accidents and ensure safety on the road.