What is the maximum allowable speed in ATC Bypass mode?

In ATC Bypass mode, the maximum allowable speed is set at 40 mph. This speed limit is established to ensure safety and operational integrity when the Automatic Train Control (ATC) system is intentionally bypassed. Although the ATC system provides automated monitoring and control of train speeds, bypassing it places the responsibility entirely on the engineer to maintain appropriate speeds, especially in areas where signals and track conditions might change.

Setting the maximum speed to 40 mph allows for a reasonable margin of safety, ensuring that train engineers have sufficient time to react to any emergencies or unforeseen circumstances while navigating the rail networks without the full assistance of the ATC system. The limits are strictly enforced to prevent potential accidents and ensure the safe operation of trains in a manual control scenario. This compliance with the speed limit is critical, as it helps mitigate risks associated with human error and external factors that may affect train operation.