Final answer:
According to Wisconsin law, headlights must be turned on during darkness and when visibility is reduced to 500 feet or less due to weather conditions.
Step-by-step explanation:
In Wisconsin, the law requires you to turn on your headlights under certain conditions. According to Wisconsin law, you must turn on your headlights when it is dark outside, such as between sunset and sunrise.
Additionally, headlights must be used when visibility is reduced to 500 feet or less due to rain, snow, fog, or other weather conditions. It is important to always follow the specific laws of your state regarding the use of headlights.