Four post-war railway disasters changed the modern permanent way (a.k.a. track system) more than any others: Hither Green, Tattenhall, Ulleskelf and Hatfield.

All of these fatal tragedies exposed cracks in our understanding of the way the permanent way worked, resulting in the industry learning, developing, and becoming safer. This week’s #RailNatter will explore the legacy of each in turn.

Join LIVE to ask your questions and hopefully see how important and powerful incremental innovation is.

Note that this episode contains images and descriptions of train derailments that some viewers may find upsetting.