JJ Keller Entry Level Driver Training CDL Practice Test 2025 – Comprehensive All-in-One Guide to Exam Success!

Tire chains are most effective in heavy snow conditions because they provide improved traction on slippery and snow-covered surfaces. The design and tread pattern of tire chains create additional grip by digging into the snow, allowing vehicles to maintain better control and stability. When driving in heavy snowfall, standard tires may struggle with traction, leading to potential sliding or inability to ascend steep grades. Tire chains enhance the tire's contact with the road, which is essential for safe navigation in such challenging weather.

In contrast, heavy rain can lead to hydroplaning, which tire chains do not effectively address. Foggy weather primarily affects visibility rather than traction, making tire chains unnecessary. Mild winter conditions may not warrant tire chains since the road surface might not be significantly impacted by snow or ice. Therefore, heavy snow is when tire chains are particularly advantageous, ensuring safer driving conditions.