Final answer:
Headlights should be turned on beyond nighttime driving when visibility is less than 500 feet or 152 meters. This is aimed to enhance vehicle visibility and prevent possible accidents during periods of poor visibility.
Step-by-step explanation:
In addition to nighttime driving, you should also turn on your headlights when visibility is less than 500 feet or roughly about 152 meters. This rule applies during periods of reduced visibility such as in fog, heavy rain or snow. In many areas, there are laws that mandate the use of headlights during inclement weather or when visibility becomes poor. The rationale behind this is to increase the vehicle’s visibility thereby preventing potential accidents. Remember, it's not only important for you to see other drivers, but it's also crucial for other drivers to see you.
Learn more about Nighttime Driving