[HN Gopher] Show HN: I visualized the entire history of Citi Bik...
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       Show HN: I visualized the entire history of Citi Bike in the
       browser
        
       Each moving arrow represents one real bike ride out of 291 million,
       and if you've ever taken a Citi Bike before, you are included in
       this massive visualization!  You can search for your ride using Cmd
       + K and your Citi Bike receipt, which should give you the time of
       your ride and start/end station.  Everything is open source:
       https://github.com/freemanjiang/bikemap  Some technical details: -
       No backend! Processed data is stored in parquet files on a
       Cloudflare CDN, and queried directly by DuckDB WASM  - deck.gl w/
       Mapbox for GPU-accelerated rendering of thousands of concurrent
       animated bikes  - Web Workers decode polyline routes and do as much
       precomputation as possible off the main thread  - Since only
       (start, end) station pairs are provided, routes are generated by
       querying OSRM for the shortest path between all 2,400+ station
       pairs
        
       Author : freemanjiang
       Score  : 22 points
       Date   : 2026-01-07 18:57 UTC (4 hours ago)
        
 (HTM) web link (bikemap.nyc)
 (TXT) w3m dump (bikemap.nyc)
        
       | ge96 wrote:
       | How was the data gathered? They just publicly show the bike's
       | locations?
        
         | RIMR wrote:
         | https://bikemap.nyc/about
        
           | ge96 wrote:
           | That's cool it actually came from citibike
        
       | IvoCrnkovic wrote:
       | I've seen many visualizations of the citibike data over the
       | years, this is one of the most charismatic for sure!
        
         | nadis wrote:
         | +1 to this comment! I used to work in this space and have
         | similarly seen many projects and professional attempts at
         | visualizing this kind of trip data.
         | 
         | This is beautifully done!
        
       | wiredfool wrote:
       | Interesting that citibike publishes trip level data. The bike
       | share schemes in Dublin only publish station counts or free bike
       | locations. So you can see the overall pattern of bike motion, but
       | there's no way to see how many north side trips go to the docks
       | vs Heuston station vs the city center.
        
       | 7777777phil wrote:
       | This is just so cool! Not much more to add. Thanks a lot for
       | sharing!! Great work :)
        
       | leros wrote:
       | How is MapBox going for this free tool? Is it costing you money?
        
       | gnfargbl wrote:
       | It's often interesting to observe the different ways that privacy
       | is approached in the US and Europe.
       | 
       | In Europe we often accept pretty grave restrictions of our
       | liberty like the UK's Online Safety Act, which would never fly in
       | the US, and we do so without much public comment.
       | 
       | On the other side of things, organisations in the US happily
       | expose datasets like this one, which would give a most EU Data
       | Protection Officers a heart attack, and nobody bats an eyelid.
        
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       (page generated 2026-01-07 23:00 UTC)