Reports on a railfan chat list indicate that the Lake Shore Limited is now operating with one locomotive between Chicago and Albany-Rensselaer, New York.
The change was reported to have begun on Tuesday and field reports indicated that that Nos. 48 and 49 each has one locomotive rather than two on that date.
A dual-mode locomotive will pull the Lake Shore Limited between New York and Albany-Rensselaer where one unit has been the practice.
In past years, the motive power between Chicago and Albany-Rensselaer operated through to Boston on Nos. 448 and 449. But the latter trains have operated only between Boston and Albany-Rensselaer for the past year with through passengers having to switch trains in Albany-Rensselaer.
Amtrak has said that construction at the Albany-Rensselaer station has been the reason for operating No. 448/449 as a shuttle train rather than as a through operation to and from Chicago.
Another online report indicated that the Chicago-Boston through cars will not return until early October.
Operating with one locomotive is not an unusual practice at Amtrak, particularly on routes that are relatively flat. Among the trains that have routinely operated with one unit are the City of New Orleans and Texas Eagle.
However, the Chicago-New York Cardinal operates through mountainous West Virginia and it regularly has one locomotive. The Chicago-Washington Capitol Limited also operates with one locomotive during the winter when its consist is reduced.
Recent photographs posted on line show that single-unit running is also taking place on the Silver Star and Silver Meteor between Washington and Miami.