What must the train engineer do to acknowledge a mode change on the TOD?

To acknowledge a mode change on the Train Operator Display (TOD), the train engineer must select the flashing mode indication on the TOD touch screen. This action is required because it directly confirms the engineer's awareness and acceptance of the mode change, which is critical for safety and operational awareness.

When a mode change occurs, the indication on the TOD is designed to alert the engineer to do something to confirm that they see and understand the change. By physically selecting the flashing indication, the engineer interacts with the system, ensuring that they are actively monitoring the train's operational status. This is vital for maintaining effective communication between the train systems and the engineer, especially in complex or changing operational environments.

Other methods, such as pressing a button on the control panel or sending a text message to control, may not provide the necessary confirmation required for the mode change. Additionally, waiting for automatic acknowledgment does not engage the engineer in the process, leaving room for miscommunication or oversight. The interactive nature of selecting the indication on the touch screen fosters attentiveness and responsibility in operating the train safely.