How is rain removal from the windshields accomplished?

Rain removal from windshields can effectively be aided by applying a special coating that promotes water beading and enables the rain to roll off the glass more easily. This type of coating typically consists of a hydrophobic material that changes the surface tension of the glass, causing water to form beads instead of spreading out. As a result, the visibility for the driver improves during rainy conditions, reducing the need for excessive wiper use.

The other methods, such as manual wipers or heating elements, focus on mechanical or thermal approaches to manage rain on the windshield. While wipers are effective, they are manual and can wear down over time, requiring replacement. Heating elements can also help keep the windshield clear, especially in icy conditions but are more specific to addressing ice rather than rain removal alone. Water repellent sprays offer a temporary solution but may require repeated applications to maintain effectiveness. In contrast, a special coating provides a longer-lasting solution that enhances the windshield's inherent anti-rain properties.