During what weather conditions is it essential to increase following distance?

Increasing following distance in heavy rain or snow is essential due to the reduced traction and visibility these conditions create. Wet or snowy roads can significantly increase stopping distances because vehicles may hydroplane or skid when traction is compromised. Reduced visibility during storms or snowfall can also make it harder to see sudden stops or obstacles ahead, which necessitates a greater distance to react appropriately.

In contrast, clear weather typically allows for shorter following distances because road conditions are optimal, and visibility is not impeded. Nighttime driving can pose challenges due to reduced visibility, but experienced drivers can often adjust their speed and margins appropriately. Sunny conditions usually do not require an increased following distance, as road conditions are generally good and visibility is high.