What is the primary purpose of marking Form D's with an X after they have been fulfilled?

The primary purpose of marking Form D's with an X after they have been fulfilled is to maintain accurate records for inspection. This practice ensures that there is a clear and traceable history of what permissions have been granted and fulfilled, which is crucial for both accountability and safety in railroad operations. By marking the forms, it provides a definitive record that can be referenced during inspections or audits, allowing for the verification of procedures and compliance with operational standards.

This method also supports good record-keeping practices that contribute to the overall safety and effectiveness of train dispatch operations. When forms are clearly marked as fulfilled, it helps mitigate confusion or errors that could arise if a document were to be reused or misinterpreted in the future. Accurate records played a vital role in effective communication among dispatchers, train crews, and other railway personnel.