Final answer:
When a train operator is signaled to slow down due to work on the tracks, they should expect to see signals indicating that they can resume speed placed beyond the work area.
Step-by-step explanation:
In most cases, when a train operator is signaled to slow down by lanterns because employees are working on the tracks, they should expect to see signals indicating that they can resume speed placed beyond the work a distance of several hundred feet. The exact distance may vary depending on the specific situation, but it is typically a significant distance away from the work area.