First rail passenger wagon is available in 1807. Despite not being very practical to use (~1 per horse), there is no rail stop that can take passengers to use them with. Sure one could build docks on nearby water slopes or inns and stage coaches on nearby roads but that clearly feels like fighting something missing from the pakset.
Thank you for reporting that. I have now brought forward the introduction date for the rail staging post from 1826 to 1807 to match the date for the earliest railway carriage. This change should be available in the next nightly pakset build.
The Stockton and Darlington Railway was the first public passenger-carrying railway in 1825. Where are we drawing the line between the might-have-beens and the historical?
The original Swansea & Mumbles Railway (https://en.wikipedia.org/wiki/Swansea_and_Mumbles_Railway) opened in 1806, and was the world's first passenger carrying railway. That is why the passenger wagons date from this time.