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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

      I think two threads are in order today re: trainpoasting First will concern commercial space, second aesthetic rural trains & Acadie

      1 reply 4 retweets 9 likes
      Haunted Forrest  🌲‏ @380kmh 15 Sep 2016

      When I talk about commercial space, I refer to exclusively pedestrian places where things are bought and sold, eg. the interior of a shop.

      11:37 AM - 15 Sep 2016
      • 1 Like
      • Dumb Fish
      1 reply 0 retweets 1 like
        1. New conversation
        2. Haunted Forrest  🌲‏ @380kmh 15 Sep 2016
          Replying to @380kmh

          The fact that *every customer is a pedestrian* is something which, even in the USA, is difficult to avoid. Drive thru is only exception.

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

          Naturally, you do not need to be inside a specific building to be in a commercial space. Open-air marketplaces, arcades, etc, qualify too.

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

          But even in the market, you typically have a collection of stalls or stands, and in an arcade, a row of open-front shops.

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

          So with this in mind, you can start to think of a geometry of commerce, in which the individual establishment = a point.

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

          There are two kinds of transportation that are relevant here: there is getting to and from the commercial space, and navigating within it.

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

          The mode of transportation for the latter is always on foot--but for the former, it depends on the sort of commercial space.

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

          So, an isolated "point," an establishment without neighbors, may be reached by walking, biking, or driving, but lacks demand for transit.

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

          But move from a point to a line--that is, a row of adjacent establishments--and the spatial demands for car access increase drastically.

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

          Move up to a plane--establishments in a non-linear cluster--and the parking requirements start getting unmanageable.

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

          At this point, with so many businesses, you must either have something like an outlet mall with fields of parking...

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

          ...or, as is far more often the case, you must have something like a commercial district in a city, with walking-distance houses & transit.

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

          Google is helpfully highlighting commercial spaces--this shows point & three varieties of line (small, large, urban)pic.twitter.com/FH62kcZtHb

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

          Once your commercial geometry is a plane instead of a line or point, it starts to be impossible to rely solely on cars to bring customers...

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

          ...it becomes essential to have residences w/in walking distance and some sort of transit as well as parking.pic.twitter.com/ajMblKKnYw

          1 reply 0 retweets 2 likes
        16. 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
        17. 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
        18. 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
        19. 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
        20. 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
        21. 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
        22. 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
        23. 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
        24. 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
        25. 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
        26. Haunted Forrest  🌲‏ @380kmh 15 Sep 2016
          Replying to @380kmh

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

          1 reply 2 retweets 5 likes
        27. 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
        28. 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
        29. 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
        30. 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
        31. 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
        32. 15 more replies

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