What is a Bulletin Order (BO)?

A Bulletin Order (BO) is primarily a temporary order that affects train movements. It is used to communicate specific instructions or changes in the operation of trains due to various factors, such as track maintenance, weather conditions, or unforeseen incidents. These orders are essential for ensuring the safe and efficient operation of the railroad as they provide updated information regarding train schedules, detours, speed restrictions, or other modifications that may impact normal train operations.

The nature of a Bulletin Order is to provide time-sensitive information to crews, allowing them to adapt to changing circumstances on the railroad. This is crucial for maintaining safety and compliance with operational protocols during varying conditions.

In contrast, the other options represent different types of directives or orders that do not specifically relate to the immediate and temporary adjustments in train movements that a Bulletin Order addresses. Worker assignments and long-term operational guidelines focus on different aspects of railroad management, while emergency evacuation directives pertain specifically to safety protocols in crisis situations, rather than regular train operations.