What should the wiper blades exhibit to ensure proper operation?

Wiper blades should exhibit constant contact with the windshield to ensure proper operation. This is crucial because only when the blades maintain effective contact can they effectively clear water, debris, and other obstructions from the glass. If there are gaps or if the blades do not press evenly against the windshield, it can result in streaking or inadequate visibility, which is dangerous while driving.

Proper contact helps distribute the pressure evenly, allowing for a thorough wipe across the surface of the windshield. Consistent and reliable movement of the wiper blades also contributes to overall safety by ensuring that the driver has a clear line of sight in adverse weather conditions. This is essential for safe driving and effective operation of the vehicle.