Boy, does this ever bring back a memory!!
Back about 70 years ago we would ride from our home in Washington, D.C., to Wisconsin and back by train...B&O to Chicago, CB&Q to LaCrosse, the Columbian and Twin Cities Zephyr, respectively...most summers to visit Mom's relatives/family. On most of those B&O rides I would have befriended the Conductors who often acknowledged me by name since I could be found in the dome car, the diner, traversing the noisy/bouncing inter-car vestibules,...and, especially, the boat-tailed observation car. That was THE most magical place for this kid to experience train travel.
On the return trip (eastbound) the Columbian would 'wye' into Union Station. One time the Conductor asked Mom if he could have me join him in the observation car for a special experience as we neared D.C.. She, of course, agreed. The observation car was virtually empty of riders in the rearmost lounge area as we entered the car. The Conductor had me sit at the very rear window. He opened a small door beneath a side window a couple feet away, exposing some interesting valves. The train finally came to a stop at the end of the wye adjacent to the Ivy Street yards. Then the magic started!!
The Conductor manipulated a valve receiving a responsive 'tweet' shortly thereafter. He explained that he was 'talking' to the engineer, and now, as the train began to slowly move in reverse, he and I would be the 'engineer' and 'fireman'!! And so it seemed as we were now at the FRONT of the train, traversing a myriad of switchworks, slowly heading for the Union Station terminal platforms. OMG! It was simply an awesome experience for this bug-eyed kid!
As we entered the final platform track, the conductor now rapidly conveyed several 'tweets' to the engineer and the train slowed, slowed again, and again, ...and finally stopped several feet from the station bumper. "WE" had brought the Columbian into a safe, gentle stop to the station!
Dad often was unable to make this month-long summer's journey, not having sufficient vacation time from his work...on Capitol Hill. But he would meet us upon our arrival. After the first time I was allowed to 'help' back the train into the station, in subsequent trips, Dad would stand, camera at the ready, near the bumper end of the platform and walk beside the train, smiling/waving to me, as we came to a stop.
Ah, well, it doesn't do squat for answering the OP's question, but it sure shook the cobwebs of memory for this kid who just turned 79 last Friday. Thanks, Peter!!
KD