For full train nerddom, there's also https://www.opentraintimes.com/maps https://www.opentraintimes.com/maps, which shows the data from the train describer syst

For full train nerddom, there's also https://www.opentraintimes.com/maps https://www.opentraintimes.com/maps, which shows the data from the train describer system so you can track the position of trains down to the signal level.