What is the minimum distance you must turn on your headlights before sunset?

The correct measure for turning on headlights before sunset is to do so 30 minutes prior to the sun setting. This guideline is crucial for ensuring maximum visibility on the road, as it allows drivers to fully assess their surroundings as daylight diminishes. By activating headlights ahead of sunset, you improve your ability to see and be seen by other road users, thereby enhancing safety.

This timing is based on the fact that light conditions can change rapidly as the sun approaches the horizon. When driving in suburban or rural areas, it is especially important to ensure that your vehicle is visible to others well before darkness sets in. It creates a safer driving environment not only for you but also for pedestrians and other vehicles.

While other choices suggest different times before sunset, they either do not provide sufficient time for safe driving conditions or are less commonly accepted guidelines for effective driving practices.