What action is not necessary for the in-cab check according to procedure?

The action of listing minor and major defects during the in-cab check is not strictly necessary according to procedure. Instead, the in-cab check focuses on ensuring that the driver has a thorough understanding of the vehicle's operational safety features and that all components function correctly at the time of inspection. While identifying defects is important, the procedure emphasizes the immediate checks and validations of the vehicle's systems rather than a comprehensive listing of potential issues.

In-cab checks primarily involve verifying that crucial items such as lights, signals, brakes, and other operational controls are functional. Focusing on immediate inspection and operational checks allows for a more efficient and effective assessment of the vehicle's readiness for safe operation, rather than taking time to categorize defects, which may not require immediate attention during the in-cab inspection phase.