Which order contains temporary items affecting the movement of trains?

The Bulletin Order (BO) is specifically designed to communicate temporary items that can have an immediate impact on train movements. These orders may include urgent updates related to track conditions, crew assignments, safety measures, or adjustments due to unforeseen circumstances. The information in a Bulletin Order is typically time-sensitive, thus ensuring that locomotive engineers and other rail workers are immediately informed of any changes that could affect the safe and efficient operation of trains.

In contrast, the General Order (GO) usually encompasses broader directives that might not be as urgent or time-sensitive, while the General Notice (GN) serves more as informational announcements rather than direct operational changes. The Operations Notice (ON) tends to focus on procedures or regulations rather than temporary adjustments affecting day-to-day train movement. Therefore, Bulletin Orders stand out because they are specifically tailored for rapid communication regarding temporary changes that need to be adhered to promptly.