Comment by quitit

I didn't do a deep dive into the issues as there are many - but a contributor to the tardiness is the decommissioning of track switches/overtaking lanes. While this allowed for a short term economy, it harmed the reliability of the network and causes flow-on traffic.

I include this detail as the source of the largest problems are not necessarily about creation of new infrastructure (although that of course would be the solution), but the deletion of existing infrastructure.