Whenever driving behind another vehicle at night, when should headlights be dimmed?

Headlights should be dimmed when driving behind another vehicle at night within a distance of 300 feet. This regulation is designed to prevent blinding the driver of the vehicle in front of you with your bright headlights, which can make it difficult for them to see the road and maintain control of their vehicle.

Dimming your headlights at this distance ensures that the other driver has a clear view of the road ahead without being distracted or impaired by intense lighting. This safety measure is an important part of nighttime driving etiquette and helps to reduce the risk of accidents caused by reduced visibility.

In comparison, the other distances presented in the quiz options are not aligned with California law regarding when to dim headlights when following another vehicle, which is specifically set at the 300-foot mark.