When must an assistant conductor perform an equipment check?

Answer: B — Before each shift and prior to train departure

An assistant conductor must perform an equipment check before each shift and prior to train departure to ensure that all safety equipment and operational systems are functioning correctly. This practice is crucial because it helps identify any potential issues that could compromise the safety of the crew, passengers, or train operations. Conducting these checks consistently allows for early detection of irregularities, enabling timely corrective actions to be taken, thereby maintaining a high standard of safety and efficiency in train operations. Regular equipment checks also ensure compliance with operational protocols and regulations, which are essential for the overall integrity of the transportation system.