The group I work in (Amey Consulting) have built a couple of systems for Network Rail here in the UK, called Quartz and Cosmo. These are analytic systems examine rail delays and delay propagation, especially sub-threshold delays (in the UK delays over a threshold - 2 mins IIRC) have to be reported, but those under 2 mins don't. We started looking at sub-threshold delays a few years ago, and have understood how these small delays build and propagate through the network, affecting multiple services.
We are always recruiting (UK - main sites London and Manchester, some folk in Birmingham too) - so if you have an interest in applying data science to infrastructure have a look here: https://www.amey.co.uk/what-we-do/amey-consulting/careers-wi..., or DM me