Average speed at each location according to NextBus, April 13 - May 21, 2010.
Each level of gray represents a speed increment of 0.1 mph, up to a threshold of 24 mph.
nkdby, makalih, michal migurski, and 16 other people added this photo to their favorites.

nkdby 37 months ago | reply
I am enjoying how the areas of inactivity become these organic shapes that are crucial to the composition of each piece. I am also drawn to the paths that become fiber like twine or hair. I get the feeling that these are abstractions of spider webs or bird nests. Great work here.
savage_ace [deleted] 37 months ago | reply
it seems like these images give one a better notion of where the action is in Frisco.
3:14 37 months ago | reply
fascinating!
I've been trying to make something of the nature for my city, but unfortunately lack the information or simply haven't been smart enough to get it.
These maps, besides having a visual attractive to them, would actually be really really useful tools for urban development. How do you transform the data into this?
Congratulations on your work (including the fantastic geotagging maps)
Eric Fischer 37 months ago | reply
Thanks!
How you do it probably depends on the transit system. With Muni, every time you send the vehicleLocations request, you just get back a list of all the vehicles, where they were the last time they checked in, and how long ago that was. Once you accumulate a set of responses over a period of time, it is simple to derive how fast each vehicle moved between one time it checked in and the next, and average all the speeds at each location. But if your city's transit system doesn't provide such detailed information about where all the vehicles are, it might be much more difficult.