What type of order represents permanent changes in Operating Rules and Special Instructions?

A General Order (GO) is used to convey permanent changes to Operating Rules and Special Instructions. This type of order is critical because it formally updates or alters the existing rules that govern operation and safety protocols within the railway system. This ensures that all employees are aware of these changes and that they consistently apply them in their daily operations.

In contrast, other types of orders may address more temporary or situation-specific instructions, such as the Bulletin Order, which typically disseminates changes intended for short-term use or specific circumstances. Operations Notices and General Notices also serve different purposes, often pertaining to more immediate or general information rather than permanent modifications in operating standards. The General Order solidifies changes that require consistent compliance, making it the best answer in this context.