What is the purpose of train orders issued?

The purpose of train orders issued is primarily focused on the movement of work trains and other specified vehicles within a railway network. Train orders provide crucial instructions that ensure safety and coordination for various operations, especially when dealing with trains that may not operate on a regular schedule or that require special handling in specific situations. When work trains or maintenance vehicles need to be moved, clear directives are necessary to manage interactions with regular train movements and to maintain safe operational protocols.

The context of the other options can be useful to understand their roles in railway operations. Routine maintenance checks and scheduling of routine inspections are typically governed by established schedules and operational protocols, rather than train orders. Meanwhile, informing crew about upcoming stops involves customer service and regular passenger operations, which also do not typically fall under the categorical use of train orders, as those generally pertain to specific directives regarding train operations that deviate from the standard practices. Hence, the focus of train orders is on controlling and coordinating the movements of specialized trains, making option B the correct choice.