a-b-street / 15m

New version of the 15-minute neighborhood tool

https://a-b-street.github.io/15m/

Apache License 2.0

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PT routing #4

Open dabreegster opened 3 months ago

dabreegster commented 3 months ago

Walking + PT has been started in this repo. Just starting a list of improvements.

UI

[ ] Just make a nice UI to explore GTFS data. See routes on a map, see timetables per stop, etc. Look for inspiration. Old ideas in https://github.com/dabreegster/bus_spotting and https://github.com/a-b-street/abstreet/issues/372.

A-to-B routing

[ ] Configurable start time
[ ] Display text route directions nicer. "Walk 5 minutes", "wait 4 minutes", plumb info about the route taken
[x] Correctness -- only ever 1 stop per trip? Impossible
[ ] Use route shapes for display (and see how much space they need)
[ ] Get more precise about linking walking and transit steps

Isochrone

[x] Implement it

Data model

[ ] Decide requirements for days of the week, service exceptions, etc
[ ] Think through serveless-friendly ways of getting GTFS data

Performance

[ ] Can an A*-like heuristic help for PT routing? Edit: yes, but it loses optimality
[ ] Get base file size down, without GTFS. London is 370MB, but the PFB is 90MB
[ ] Smaller GTFS data. London is around 300MB right now
[ ] More compact NaiveTimes?

Refactoring

[ ] Figure out what frontend and backend components are generally shareable
[ ] Specifically use in https://github.com/Hussein-Mahfouz/meet-me-halfway/