How should the brake application be held for a proper reading during inspection?

For a proper reading during an inspection, the brake application should be held for at least 2 minutes. This time frame allows sufficient duration for the air pressure in the brake system to stabilize, ensuring that any potential leaks or pressure losses can be accurately assessed.

Holding the brake application for too short a time may not give a true representation of the system's integrity, as fluctuations in pressure can still occur during initial moments of the application.

Additionally, the 2-minute duration strikes a balance between thorough testing and practical application, allowing for efficient inspections without being excessively time-consuming. The selected time enables inspectors to evaluate both the system’s performance and its reliability under simulation conditions, providing clarity on whether the brakes will function as intended under normal operating conditions.