What issue might arise if the windshield wipers on a school bus are not functioning properly?

The issue that arises when the windshield wipers on a school bus are not functioning properly is significantly related to reduced visibility during rain or snow. Windshield wipers are critical for clearing rain, snow, and debris from the windshield, ensuring that the driver has a clear line of sight while operating the vehicle. If the wipers are malfunctioning, it compromises visibility, which can lead to dangerous driving conditions and increase the risk of accidents. Clear visibility is essential for safe driving, especially for a vehicle carrying children, and improper functioning of wipers can hinder the driver's ability to see approaching traffic, pedestrians, or obstacles on the road.

This is a vital safety concern, particularly under inclement weather conditions that require effective wiper operation to maintain road safety.