Don't worry, it's not another thread about bugs in TSW. If you have access to BBC iPlayer, they have an interesting documentary on the changes in railways in Wales over the past few years. https://www.bbc.co.uk/iplayer/episode/m001jypp/how-to-fix-a-railway
https://www.bbc.co.uk/news/uk-wales-64814579 Text version of the documentary for those who don't want to waste an hour The title is misleading in that they're not "fixing a railway" but redesigning the South Wales rail system to give a metro style system with light rail replacing heavy rail in sections