What is the primary function of the bus's electrical system?

The primary function of a bus's electrical system is to supply power to essential components and systems. This includes powering the ignition system, lights, air conditioning, heating, radios, and other critical electronics necessary for the safe and efficient operation of the vehicle. The electrical system ensures that these components function correctly, enabling the bus to operate effectively and safely while providing necessary amenities for passengers and drivers alike.

Enhancing fuel economy, maintaining tire pressure, and regulating coolant levels are important aspects of bus operation, but they do not fall under the direct remit of the electrical system's primary function. Instead, those tasks are typically managed by separate systems, such as the fuel management system, tire pressure monitoring systems, and cooling systems. Thus, understanding the core role of the electrical system is vital for recognizing its significance in the overall performance of the bus.