What does the BDR code stand for?

The BDR code stands for "Blocking Device Removed." This term is essential in the context of railroad operations, particularly for safety and operational protocols. The code signifies that a blocking device, which is used to prevent unauthorized access to a section of track or to ensure the safety of personnel and equipment, has been removed from its position. This notification is crucial because it alerts train crews and maintenance personnel that a specific area is no longer safeguarded by the blocking measures, thereby affecting how they should proceed with operations, maintenance tasks, or other actions in the area. Understanding this code helps ensure compliance with safety protocols and prevents accidents related to unauthorized access to track segments that require caution or restriction.