What risk increases with poor visibility from vehicle headlights at night?

When visibility from vehicle headlights is poor at night, the likelihood of accidents significantly increases. This occurs because drivers may not be able to see obstacles, other vehicles, or pedestrians in their paths, leading to a greater chance of collisions. Poor visibility can also affect a driver's ability to gauge distances and make safe maneuvers on the road.

Enhanced driver confidence, improved navigation, and better fuel efficiency are related to optimal visibility conditions rather than a lack of visibility. In fact, poor visibility negatively impacts all these aspects, leading to hesitance in driving, difficulties in assessing the road layout, and potentially less efficient driving patterns due to erratic speed changes or sudden stops. Thus, the primary risk associated with poor nighttime visibility is the increased risk of accidents.