Final answer:
To prevent hydroplaning, maintain good tire tread depth and reduce your speed. More friction is desirable when walking on slippery surfaces.
Step-by-step explanation:
The best way to keep your car from hydroplaning is to have good tire tread depth and to reduce your speed. When the roads are wet, the water can accumulate between the tire and the road surface, causing the tires to lose traction and ride on top of the water. With good tire tread depth, the grooves in the tires can help channel the water away, providing better grip and reducing the chances of hydroplaning. Additionally, reducing your speed allows the tires more time to push the water away and maintain contact with the road surface.
Another example where more friction is desirable is when walking on a slippery surface. The friction between the soles of your shoes and the ground provides a better grip, allowing you to maintain stability and prevent slipping.