When is it illegal to drive without headlights in Delaware?

Driving without headlights during low visibility conditions is illegal in Delaware because headlights are crucial for ensuring safety on the road when visibility is compromised. Low visibility can result from factors such as fog, rain, snow, or even smoke. In these situations, using headlights not only helps the driver see the road better, but it also makes the vehicle more visible to other drivers, reducing the risk of collisions.

In contrast, driving only at nighttime without headlights does not cover the broader range of low visibility situations that can occur at any time of day. Similarly, driving in rural areas doesn’t inherently mean low visibility exists, and headlights are not necessary when the vehicle is stationary, as the primary concern is the ability to see and be seen while the vehicle is moving in conditions where visibility is impaired. Thus, option B captures the essential rule related to safety in various low visibility scenarios.