What is the typical abbreviation for a train that is scheduled to stop for an extended period before proceeding?

The abbreviation commonly used for a train that is scheduled to stop for an extended period before proceeding is typically "L," which stands for "layover." This indicates that the train will pause at a specific location, allowing time for passengers to board or disembark, or for other operational reasons, such as crew changes or mechanical checks. Layovers are essential for maintaining the schedule integrity and service quality, particularly on passenger trains.

Understanding this terminology is crucial for a tower operator, as it helps in managing train movements and ensuring that schedules are accurately communicated to rail personnel and passengers alike. This knowledge also aids in coordinating with dispatch and other operational units regarding train status and expected delays.