How long must the brake valve handle be in the suppression position to recover control after a penalty brake application?

The correct response is based on the established protocol for recovering control after a penalty brake application in train operations. After a penalty application, the brake valve handle must remain in the suppression position for a duration of 60 seconds. This time frame is crucial because it allows the air brakes to fully release and the system to reset properly, ensuring safe and effective control of the train can be regained.

Understanding this timing is important for ensuring that operators can react appropriately in operational scenarios. A shorter duration may not allow for adequate system reset, which could lead to complications in train handling. Conversely, waiting longer than necessary might delay the resumption of normal operations without providing additional safety benefits. Train handling protocols, including these timing requirements, are designed to maximize safety and efficiency in operations.