What is one major effect of adverse weather conditions on road safety?

Adverse weather conditions significantly impact road safety primarily by reducing both visibility and traction. When conditions are poor, such as during rain, fog, or snow, the ability of drivers to see the road clearly is compromised. Reduced visibility makes it difficult for drivers to gauge distances, recognize hazards, or see traffic signals effectively.

Moreover, traction is also affected as wet or icy surfaces can cause vehicles to lose grip, making it challenging to accelerate, decelerate, or steer effectively. This often leads to an increased risk of accidents because vehicles are more likely to skid or slide, and drivers may not have sufficient time to react to sudden changes in traffic or road conditions.

In contrast, the other options do not reflect the impact of adverse weather. For example, increased visibility or improved road traction are benefits typically associated with favorable weather, while higher driver comfort is not a direct safety issue related to adverse weather conditions. Consequently, the crucial relationship between weather conditions and the safety parameters of visibility and traction highlights the main risks faced by drivers during such adverse situations.