Which component must be checked to ensure the bus can stop effectively?

The brake system is a critical component that must be checked to ensure the bus can stop effectively. A properly functioning brake system is essential for safe operation, as it directly impacts the vehicle's ability to decelerate and come to a complete stop when needed. During a pre-trip inspection, checking the brakes involves examining the brake fluid levels, brake pads, discs, and the overall hydraulic system to ensure that all components are in good condition and functioning correctly.

If the brakes are worn, low on fluid, or malfunctioning, the ability of the bus to stop safely could be compromised, posing risks to the driver, passengers, and other road users. Thus, ensuring that the brake system is fully operational is a primary safety measure for any vehicle, especially one as large and heavy as a bus. This focus on brakes is integral to maintaining safe transport standards.

While engine performance, tire pressure, and steering system condition are also important, they do not directly influence the bus's stopping capability in the same way that the brake system does. Each of these components needs to be inspected for overall vehicle safety, but when it comes to stopping effectively, the brakes are paramount.