It looks different if you only consider a smaller area

The pressure for the Berkeley-Oakland loop route must come from trying to get a shorter path for longer-distance travel. If you consider only a smaller area, you get something that looks more like Oakland's branchy street system.

 

In this view, Telegraph is the street most neglected by existing rapid transit infrastructure.

 

Perhaps worth comparing to a long ago promotional brochure about the centrality of downtown Oakland.

 

(21167 trips routed through 1000 geotags. Data from the Twitter streaming API. Base map from OpenStreetMap, CC-BY-SA.)

  • Jianwei Yang PRO 4y

    I love this project, it should be very useful to city officials, if they care.
  • Eric Fischer PRO 4y

    Thanks! I doubt anyone is likely to build any more real rapid transit lines in Oakland or Berkeley, but it does bear a resemblance to the bus rapid transit network that AC Transit is trying to put together.
  • Ken-ichi Ueda PRO 4y

    So have you looked into the demographics of the tweeple (sorry, but I think that word is hilarious) you're sampling? It could be that Telegraph is a really popular corridor for men between the ages of 16 and 40 or something, but irrelevant for people who tend not to use Twitter.

    Cartographically, I think it would be useful to classify the existing roads in terms of size, perhaps along with existing public transit routes in terms of capacity. It would probably add more clutter and ruin the beautiful inkiness of these maps, but it would make a stronger visual case for "ignored" streets if we could see a massive inky path underlying a tiny red road, while a wide red road has a tiny inky overlay.
  • Eric Fischer PRO 4y

    No, I haven't looked into the demographics and don't have a good way to associate Twitter users with demographic data. I know there is a bias, but I don't know how to adjust for it. What the north end of Telegraph definitely has is college students, and further south it has people who go to the Temescal and Uptown restaurants. I'm not so sure what goes on in between.

    Good point about trying to correlate with existing infrastructure. I had thought about bumping up the probability of existing BART stations to see what fraction of the demand they meet, but hadn't thought about doing it for whole streets.
  • Andrew Wiseman PRO 4y

    How do you know which (or if) a tweet is the start and end? Is somebody saying "I am leaving my house" then "I have arrived at the bar"? or whatever?
  • Eric Fischer PRO 4y

    Every tweet (except for the first and last by a person) is both a start and an end. They came there from somewhere else, and they left from there to somewhere else.
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