What is the maximum speed for a train in 409 territory when the ASC apparatus malfunctions?

When the Automatic Speed Control (ASC) apparatus malfunctions in 409 territory, the protocol requires that trains reduce their speed to ensure safety and maintain operational integrity. The maximum allowable speed under these conditions is 30 mph. This speed limit serves as a precautionary measure, allowing the train crew to maintain better control and reaction time in the absence of active speed monitoring by the ASC system.

In this context, while higher speeds might be typical in normal operating conditions, the malfunction presents potential risks, making the lower limit of 30 mph the safest choice. This reduced speed mitigates the chances of accidents and increases the safety margin for both the train crew and passengers.