What action must a driver take if the EP brake has failed to release on a bogie?

When the EP brake has failed to release on a bogie, locating the affected bogie is essential to assess and address the issue effectively. Understanding the specific bogie that is experiencing the malfunction allows the driver to gather detailed information about any potential damage, obstructions, or mechanical failures that may have caused the brake to remain engaged.

This focused approach helps streamline the troubleshooting process and ensures that the appropriate measures can be taken, such as conducting a closer examination of the brake components or making a decision regarding the need for further assistance or repairs. Identifying the affected bogie is a critical first step in the fault-finding process because it sets the foundation for any subsequent actions that need to be taken.

Notifying the control center, checking all brake systems for faults, or reducing speed gradually can all be relevant actions, but without first pinpointing the exact bogie with the malfunction, executing those steps would be less effective and potentially lead to delays in resolving the issue.