How should trains operate after receiving permission to enter the working limits?

Trains should operate at Maximum Authorized Speed unless otherwise directed after receiving permission to enter the working limits. This practice ensures that trains maintain efficiency and time schedules, which is essential for overall railway operations. However, it is crucial to acknowledge that safety remains a priority; therefore, if there are conditions such as restricted visibility or known hazards in the working limits, additional instructions may be issued to operate at a reduced speed.

When permission is granted to enter the working limits, it implies that the area is clear for train movement, and thus, using the maximum authorized speed helps maintain the operational flow of the railroad. This speed allows trains to continue their journey as planned, provided that no other instructions are given.

In contrast, operating always at a reduced speed could lead to unnecessary delays and disruptions in service. Other options suggest stopping or proceeding without stopping, but these would not align with the established protocols for smoothly entering a work zone when clearance has been granted.