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Hoboken Commuter API Reverse Engineering

The HOP

  • Other examples of GUIs/API clients for passiogo

  • Real time bus info found at Passiogo

    • Built jQuery
    • shipped without minification
    • Useful stuff about the website implementation
      • global var buses holds info on each bus
      • bus objects have lat/long, bus name, and IDs
      • exposes Firebase cloud messaging (FCM) keys for some kind of real-time comms with server
        • not working in my browser due to privacy settings

  • IMPORTANT NUMBERS:

    • Hoboken system: 466
    • Hoboken routes:
      • 46857, 47234, 47235 (green hop), 47233

  • Look at types and comments in main.ts:passio-api to see what the raw API responses look like

  • instead of ETA we compute estimated distance to next stop since it's easier

  • TODO: build basic frontend with pure HTML and CSS

    • default to showing info for Red Hop 12th st and Green hop Trader Joe's
    • include drop-down selector to pick different lines/stations

  • TODO: build up histogram to provide ETAs

    • Architecture: every time we check in record the current time, route, and bus location
    • SOLUTION 1: periodically compute time deltas + distance traveled during those deltas
      • compute as total distance traveled from previous node to current node
      • save as map from distance to list of time deltas
      • what happens then the bus goes way off course due to missed turns or road closures?
    • SOLUTION 2: check in often enough to capture many instances of bus being near a station (<0.25mi?)
      • Record all time deltas between adjacent keyed by time of day and day of week
      • any time we check in look up saved time to next stop to show ETA

  • TODO: move types to JSDoc to eliminate build step

    • probably a huge lift and bun build is simple enough for now
    • split up into modules as described by comments once single file becomes unmanageable

NJ Transit Bus 126

  • button to instantly swap from home view to PATH view
  • connection opportunities with MTA