Which mode does the engineer operate in during an improper short stop before switching?

When an engineer encounters an improper short stop before switching, they operate in MCS mode, which stands for Manual Control System mode. This mode is crucial for situations where operational control must be manually maintained, particularly during emergencies or when automatic systems are not functioning as expected.

In MCS mode, the train engineer has direct control over the train, allowing them to manage its speed and position effectively before transitioning into a switching maneuver. This level of control is vital to ensure safety and prevent accidents, especially in scenarios where an improper stop has occurred, leading to potential hazards.

Maintaining control in MCS mode enables the engineer to respond to the situation appropriately and prepare for the next steps in a controlled manner, ensuring the safety of both the train and its passengers.