What should be done during the in-cab inspection regarding the vehicle controls?

During the in-cab inspection, demonstrating the functionality of vehicle controls is crucial for ensuring that the operator is familiar with how to effectively use the vehicle's systems. This demonstration includes checking that essential controls such as the steering, brakes, and other operational features are responsive and in proper working condition. It helps in confirming that the driver understands how to operate the vehicle safely and is aware of the controls at their disposal. Being proficient in using these controls contributes to overall safety and effective vehicle operation.

While checking for cleanliness and organization can be important for general maintenance and comfort, it does not directly relate to the functional readiness of the vehicle's controls. Calculating fuel consumption metrics typically occurs after the vehicle is in operation and involves different parameters than those needed during a pre-trip inspection. Similarly, while ensuring that all lights are off is a part of operational checks, it does not specifically address the functions of cab controls which are crucial for safe driving. Thus, understanding and demonstrating the functionality of vehicle controls stands out as the necessary action during an in-cab inspection.