Manitoba Airbrake Practice Exam 2025 – 400 Free Practice Questions to Pass the Exam

The air brake system should be tested during a pre-trip inspection primarily by performing a brake system leak test and checking pressure levels. This process is crucial because air brakes rely on compressed air to function effectively. A leak in the system can significantly impact braking performance, leading to safety hazards on the road.

Conducting a leak test allows the driver to identify any issues with the air system, such as leaks in hoses, fittings, or the air supply itself. Additionally, verifying pressure levels ensures that the air tanks have sufficient air pressure for proper brake application. Air brake systems have specific pressure requirements that must be met for safe operation; falling below this threshold can compromise the effectiveness of the brakes.

Other options, while relevant to vehicle maintenance or safety, do not specifically pertain to the air brake system testing. Checking the color of brake fluid pertains more to hydraulic brake systems rather than air brake systems. Measuring tire tread depth focuses on tire safety and performance, while assessing the condition of brake lights concerns visibility and signaling rather than the effective operation of the air brake system itself. Therefore, the correct approach for air brake inspection emphasizes the importance of leak testing and pressure level checks.