Which of the following is a risk associated with driving at night?

Driving at night presents unique challenges that can significantly impact a driver's safety. One of the primary risks is the higher likelihood of fatigue. Nighttime driving often coincides with natural circadian rhythms that promote sleepiness, especially during the late hours. When drivers are tired, their ability to concentrate and respond quickly to hazards diminishes, increasing the risk of accidents.

While some may assume that driving at night can lead to less traffic, this doesn't inherently reduce the risks involved; it may simply change the nature of the risks (such as increased likelihood of encountering fatigued drivers). Additionally, visibility is generally reduced after dark, which can make it harder to see obstacles, pedestrians, or other vehicles. Reaction times can also be affected negatively by the reduced light and increased fatigue, leading to a hazardous driving environment.

In summary, the higher likelihood of fatigue is indeed a significant risk factor for drivers during nighttime, as it directly affects alertness and overall driving performance.