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380kmh's profile
Haunted Forrest 🌲
Haunted Forrest 🌲
Haunted Forrest  🌲
@380kmh

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Haunted Forrest  🌲

@380kmh

#TrainTwitter - trains & train stations - passionate opinions on public transit & civic design - transit bureacrat, but all views here are my own

Pioneer Valley
patreon.com/380kmh
Joined March 2011

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    1. Haunted Forrest  🌲‏ @380kmh 15 Sep 2016
      Replying to @380kmh

      The three examples shown are small American city (bus hub), large American city (bus hub & subway stop), & large Japanese city (train & bus)

      1 reply 0 retweets 0 likes
    2. Haunted Forrest  🌲‏ @380kmh 15 Sep 2016
      Replying to @380kmh

      So far we've dealt with points, lines, and planes: single establishment, several in a row, several in an area. You know what's next...

      1 reply 0 retweets 0 likes
    3. Haunted Forrest  🌲‏ @380kmh 15 Sep 2016
      Replying to @380kmh

      ...three commercial dimensions. Establishments on multiple stacked planes. Enormous amount customer traffic.pic.twitter.com/VKjrSEEyFb

      1 reply 0 retweets 1 like
    4. Haunted Forrest  🌲‏ @380kmh 15 Sep 2016
      Replying to @380kmh

      You can manage lines with just cars, planes with just buses...but you *need* the capacity that rail provides to manage spaces.

      1 reply 0 retweets 0 likes
    5. Haunted Forrest  🌲‏ @380kmh 15 Sep 2016
      Replying to @380kmh

      What's so special about rail, though? Why can it provide the most capacity? A brief digression about capacity multipliers...

      1 reply 2 retweets 3 likes
    6. Haunted Forrest  🌲‏ @380kmh 15 Sep 2016
      Replying to @380kmh

      Consider all modes of transportation for what they are--pedestrian movers. You are a pedestrian before you get on, and after you get off.

      1 reply 2 retweets 3 likes
    7. Haunted Forrest  🌲‏ @380kmh 15 Sep 2016
      Replying to @380kmh

      A simple vehicle like a bicycle can move one (sometimes two) person at faster-than-walking speed. It accelerates, but doesn't multiply.

      1 reply 2 retweets 2 likes
    8. Haunted Forrest  🌲‏ @380kmh 15 Sep 2016
      Replying to @380kmh

      Something like a car, on the other hand, has multiple seats--so it can move one person, sure, but also 5 or 6; it has variable capacity.

      1 reply 2 retweets 0 likes
    9. Haunted Forrest  🌲‏ @380kmh 15 Sep 2016
      Replying to @380kmh

      If you have a single lane of road, cars only, then it has a variable *passenger* throughput even at a fixed *vehicular* throughput.

      1 reply 2 retweets 0 likes
    10. Haunted Forrest  🌲‏ @380kmh 15 Sep 2016
      Replying to @380kmh

      Number of seats is the most basic capacity multiplier: a variable which magnifies the frequency on a corridor.

      1 reply 2 retweets 0 likes
      Haunted Forrest  🌲‏ @380kmh 15 Sep 2016

      Frequency = vehicular throughput = cars (or buses, etc) per hour. 2,000 cars per hour could be 2,000 people or 10,000 people.

      12:31 PM - 15 Sep 2016
      • 2 Retweets
      • 5 Likes
      • 🚩 विषयक, अनुवादक Spooky Scary Gurevich 17 Spooky Years Of Forever War Among The *Haunted* Ruins ☩ ♔ 🕷🎃👻 Spatel
      1 reply 2 retweets 5 likes
        1. New conversation
        2. Haunted Forrest  🌲‏ @380kmh 15 Sep 2016
          Replying to @380kmh

          Vehicular throughput has severe space constraints, so multipliers are important. To move 10,000 people by car, you need...

          1 reply 2 retweets 2 likes
        3. Haunted Forrest  🌲‏ @380kmh 15 Sep 2016
          Replying to @380kmh

          ...either one lane of road, at 60 mph, w cars carrying 5 people on average, w/o stopping...or 5 lanes, 1 person avg, same speed, no stopping

          1 reply 2 retweets 2 likes
        4. Haunted Forrest  🌲‏ @380kmh 15 Sep 2016
          Replying to @380kmh

          The higher the capacity multiplier, the lower the frequency you need to achieve the same throughput.

          1 reply 2 retweets 3 likes
        5. Haunted Forrest  🌲‏ @380kmh 15 Sep 2016
          Replying to @380kmh

          Buses have 10 times as many seats as cars, which is a huge boost. Trains have 10 times as many as buses, as they are effectively...

          1 reply 2 retweets 2 likes
        6. Haunted Forrest  🌲‏ @380kmh 15 Sep 2016
          Replying to @380kmh

          ...grouped "sets" of buses that move simultaneously. Instead of getting ten buses, one after another, through a stop, move them all at once.

          1 reply 2 retweets 2 likes
        7. Haunted Forrest  🌲‏ @380kmh 15 Sep 2016
          Replying to @380kmh

          It should be clear, btw, that "train" here does not necessarily mean "uses two steel rails." The tech can vary as long as the form is right.

          1 reply 2 retweets 2 likes
        8. Haunted Forrest  🌲‏ @380kmh 15 Sep 2016
          Replying to @380kmh

          The crucial thing is that cars, buses, etc, have one capacity multiplier (seats); trains have two (seats per carriage + # of carriages)

          1 reply 4 retweets 2 likes
        9. Haunted Forrest  🌲‏ @380kmh 15 Sep 2016
          Replying to @380kmh

          So, trains can manage the best throughput per lane, a station with 10 tracks can handle FAR more people in an hour than a highway w 10 lanes

          2 replies 7 retweets 10 likes
        10. Haunted Forrest  🌲‏ @380kmh 15 Sep 2016
          Replying to @380kmh

          So, why all this emphasis on commercial space and throughput? Futurism!

          1 reply 0 retweets 0 likes
        11. Haunted Forrest  🌲‏ @380kmh 15 Sep 2016
          Replying to @380kmh

          Technological development is a process which occurs in active & growing cities--Jacobs writes about this in "Economy of Cities."

          1 reply 1 retweet 3 likes
        12. Haunted Forrest  🌲‏ @380kmh 15 Sep 2016
          Replying to @380kmh

          The ability of a city to keep growing is vitalpic.twitter.com/U7zzvwHTUI

          2 replies 1 retweet 3 likes
        13. Haunted Forrest  🌲‏ @380kmh 15 Sep 2016
          Replying to @380kmh

          So, cities need to grow--which means they need to be able to handle greater and greater concentrations of commercial activity.

          2 replies 0 retweets 1 like
        14. Haunted Forrest  🌲‏ @380kmh 15 Sep 2016
          Replying to @380kmh

          IF--big if--the only limits to human development are ingenuity, then I think "3 dimensional" commercial space will be more common in future.

          1 reply 0 retweets 2 likes
        15. Haunted Forrest  🌲‏ @380kmh 15 Sep 2016
          Replying to @380kmh

          Currently, development of this intensity only exists where the transportation tech allows it to: at a handful of VERY busy stations in Japan

          2 replies 0 retweets 1 like
        16. Haunted Forrest  🌲‏ @380kmh 15 Sep 2016
          Replying to @380kmh

          Shinjuku, Ikebukuro, Yokohama, Shibuya, Tokyo, Osaka, etc...a handful more, tops. But I suspect this is the core of cities of the future.

          2 replies 0 retweets 1 like
        17. Haunted Forrest  🌲‏ @380kmh 15 Sep 2016
          Replying to @380kmh

          There is in fact one example of a city which WAS built according to this principle, now demolished: Kowloon Walled City.

          1 reply 0 retweets 2 likes
        18. Haunted Forrest  🌲‏ @380kmh 15 Sep 2016
          Replying to @380kmh

          It solved the transportation problem in a drastic fashion; everyone who worked there also lived there. Remarkable place, RIP.

          1 reply 0 retweets 3 likes
        19. Haunted Forrest  🌲‏ @380kmh 15 Sep 2016
          Replying to @380kmh

          Kowloon represents a rough draft, a trial run. The transit hubs of Japan are a second draft, more "first-world" this time.

          1 reply 0 retweets 1 like
        20. Haunted Forrest  🌲‏ @380kmh 15 Sep 2016
          Replying to @380kmh

          For this sort of truly spatial (rather than planar) development, high-capacity transport is needed on X and Y axes; elevators & trains.

          1 reply 0 retweets 3 likes
        21. Haunted Forrest  🌲‏ @380kmh 15 Sep 2016
          Replying to @380kmh

          This, then, is my way of saying that cities w/o cars are possible, and cities w/o trains WERE possible...but prob won't be from now on.

          0 replies 0 retweets 2 likes
        22. End of conversation

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