A few months I featured a mesmerizing map of transit flows in Vancouver in a single day – as created by Andrew Walker, who runs the Vancouver-based Sumus Technology. He made these videos using a custom-built software program in his spare time, based on an a program for satellite-tracking visualization.
Turns out he’s been busy.
.
For New York, Vancouver and the mass-transit patterns of a dozen cities, go here.
Note that he often uses only the data of one agency in the cities he presents. So there can be and is a lot more going on in some places