What is a potential issue indicated by windshield wipers not functioning?

Windshield wipers are essential for maintaining visibility while driving, especially in adverse weather conditions such as rain or snow. If the windshield wipers are not functioning, it directly impacts the driver's ability to see the road and any obstacles, which is critical for safe vehicle operation. Reduced visibility increases the risk of accidents and can lead to dangerous driving situations. Therefore, a failure in the windshield wiper system creates a potential hazard for both the driver and other road users, making it crucial for wipers to operate properly, particularly in challenging weather.