It looks like there is a lot of good information in the FRA presentations linked to via this article.
FRA look at Amtrak long-distance service yields wealth of data
Ridership information shows strong use for shorter-distance trips
Feb. 28, 2023
Trains.com
Image courtesy of Trains.com
"WASHINGTON — The Federal Railroad Administration has published a surprisingly detailed summary of regional forums held during the past month in which the agency solicited opinions regarding the public’s interest in strengthening Amtrak’s national network.
As part of Amtrak’s reauthorization, 2021’s Infrastructure Investment and Jobs Act tasked the FRA to conduct a study that would evaluate restoring previously discontinued long-distance routes; establishing new service to cities not currently served by Amtrak; and converting the triweekly Cardinal and Sunset Limited to daily operation.
In materials shared with those attending six regional meetings held in Washington, Chicago, Denver, and Jackson, Miss., the agency went a step further by first dissecting ridership of Amtrak’s existing long-distance trains operating in each region. Those PowerPoint presentations, and suggestions offered by attendees, are now available at the FRA’s “Long-distance service study” website..."
https://www.trains.com/trn/news-revi...ealth-of-data/