What function does the tire pressure monitoring system serve in a school bus?

Answer: B — It alerts the driver when tire pressure falls below a specified level

The tire pressure monitoring system (TPMS) in a school bus is designed to alert the driver when tire pressure falls below a specified level. This monitoring is crucial for safety and performance, as proper tire pressure is essential for optimal handling, fuel efficiency, and overall vehicle stability. When tire pressure is too low, it can lead to increased tire wear, reduced traction, and even tire blowouts, putting the safety of passengers at risk. The TPMS actively monitors the air pressure and provides real-time data, allowing the driver to take corrective action before situation escalates. This proactive measure helps ensure that the bus operates safely, particularly in demanding conditions where reliable handling is necessary. While some options mention maintaining tire cleanliness or improving longevity, the primary function of a TPMS focuses on alerting drivers about low tire pressure to enhance safety and performance directly. Adjusting tire size automatically is not a function of the TPMS; therefore, the focus remains on its role in tire pressure monitoring as a critical safety feature.