Windshield wipers are mechanical devices installed on vehicles to clear rain, snow, and debris from the windshield. They consist of a motor, arms, and rubber blades that move back and forth across the glass. This action helps maintain visibility for the driver, especially during adverse weather conditions. The operation of windshield wipers is typically controlled by a switch inside the vehicle. Drivers can adjust the speed and frequency of the wipers based on the intensity of the precipitation. Some modern vehicles also feature rain-sensing wipers, which automatically activate when moisture is detected on the windshield.