PTV’s plans for in-cab signalling – could boost track capacity by 50%

A while back I had a read through the PTV rail network plan looking to summarise their view on the rollout of high capacity (in-cab) signalling. Sorry this post has been so long in coming. This short (three minute) video explains it nicely, but one analogy is that the current system is like driving around the burbs using nothing but traffic lights to determine when to stop or go. This of co