Which factor would not generally influence perception time?

Perception time refers to the duration it takes for a driver to recognize and understand a situation on the road before reacting. Several elements can affect this time, such as driver fatigue, complexity of traffic, and weather conditions.

While poor road conditions can impact overall driving safety and vehicle handling, they do not directly influence the speed at which a driver perceives information. Inevitably, factors like driver fatigue can slow down cognitive processing, the complexity of traffic can increase uncertainty or distractions, and adverse weather can obscure visibility, thereby affecting how quickly a driver perceives a situation.

In contrast, poor road conditions mainly relate to the physical environment rather than the cognitive aspects of perception time. Thus, it stands apart from the other options, which directly impact a driver's awareness and processing of traffic scenarios.