Which order is typically not related to the movement or operation of trains?

A General Notice (GN) is typically not related to the operational aspects or movement of trains. Instead, General Notices tend to serve broader communication purposes within the railway network, such as informing personnel about policies, updates, safety regulations, or other administrative matters that are not directly tied to the movement of trains.

In contrast, the other options are more closely associated with the operational functionality of train services. A Bulletin Order (BO) is specifically focused on communicating important and immediate information regarding train operations. General Orders (GO) often encompass directives that can include safety or operational changes affecting train crews and schedules. Similarly, an Operations Notice (ON) is usually tied to the specifics of train movements, schedules, and operational procedures. Each of these options serves to ensure safe and effective train operations, which is not the primary function of a General Notice.