How must Form L's received by radio or telephone after being fulfilled be managed?

The proper management of Form L's that are received by radio or telephone after they have been fulfilled is to mark them with an "X" and retain them for a duration of seven days. This procedure ensures that there is a clear indication that the form has been processed and is no longer active. By retaining these forms for a week, the railroad maintains a sufficient record of past communications, which is important for operational integrity and accountability.

Additionally, this period allows for any necessary audits or investigations to refer back to these forms, ensuring that all actions taken based on the formed received can be verified if needed. Retaining them for a specified timeframe helps in maintaining compliance with internal records management protocols and external regulatory requirements.