I always wondered what tech/programming was behind the notification boards on trains and in train stations. Do each station custom build their own solution, or is there a company who provides this to TFL/UK stations?
There's a couple of pubs in London (specifically close to underground stations) which have a notification boards above the bar for the next trains coming in and peering behind the notification display I see a Raspberry Pi dangling...
I think the companies providing railway signalling systems, like Thales, Alstom, Hitachi, Siemens, Westinghouse, would be most likely to supply this sort of system — or more likely, supply the system behind it but outsource the displays.
Actual on-station signage will mostly be from a set of standard parts from railway suppliers.
https://wiki.openraildata.com/ has information about various open data feeds available for the railways in Great Britain, and https://tfl.gov.uk/info-for/open-data-users/ for TfL. Third party solutions for things like railway adjacent bars presumably use one of these to get departures board info etc.
There's a couple of pubs in London (specifically close to underground stations) which have a notification boards above the bar for the next trains coming in and peering behind the notification display I see a Raspberry Pi dangling...