I believe that they use this, but that only accounts for the movement, not, switching the traincars onto the correct siding, locating a chassis, staging it, mov

I believe that they use this, but that only accounts for the movement, not, switching the traincars onto the correct siding, locating a chassis, staging it, moving the chassis/container to a parking area, and the coordinating it to be picked up by a tractor. It's more than just the load/unload.