Which factor can most influence stopping distance?

Weather conditions play a significant role in influencing stopping distance because they can directly affect the road surface and vehicle performance. For instance, rain can create slick surfaces that reduce tire traction, increasing the distance required to come to a complete stop. Similarly, snow and ice dramatically decrease traction, making it essential for drivers to increase following distances and reduce speeds to compensate for longer stopping distances.

Furthermore, fog can reduce visibility, which can indirectly affect how soon a driver can react to a situation, potentially leading to longer stopping distances in practical scenarios. Understanding the impact of various weather conditions allows drivers to make better decisions regarding speed and distance from other vehicles to ensure safety on the road.