Geographic visualization experts itoWorld release a gorgeous but all too brief, time lapse animation of public transport in North West England.
No details with the video, apart from the fact it uses publically available transit data from the (UK) National Public Transport Data Repository (NPTDR). Liverpool is on the left in the movie, and Manchester right. Perhaps someone with better local knowledge can correct me – but presumably bus movements are blue; tram, metro and train(?) movements white and yellow.
Check out the video below: