Train Radar shows a live train performance summary for every station on the National Rail network. In this display the coloured dots show the total minutes of delay at each station, calculated by adding up all delays across all train departures in the next 30 minutes. The size of the dot shows the number of current departures, and grey dots show stations with no departures in the next 30 minutes. Cancellations are excluded from the calculations.
Data source: Network Rail and OpenStreetMapStart demo