A piece of history would be lost if we discontinued steam on Mount Washington. We are fully cognizant of that. Locomotives have been overhauled, trestles have been replaced, coaches have been enlarged, but the trip remains the same. The whole switching process is repeated to allow the top-bound train to back up, then proceed ahead. Further up the mountain is Skyline switch, where the whole process is repeated if additional trains are heading down the single track.
Trains now stop before proceeding through all switches.