Public Transport Agencies provide data about bus routes, trips, and stops. Most of the bus routes are incomplete in Open Street Map, this script can help fill the gaps by exporting missing stops and bus routes in JOSM compatible format. In JOSM, stops and routes should be reviewed manually before being uploaded.
A pipenv environment is provided. If you have pipenv available on your
machine, type pipenv sync to install required dependencies. Otherwise, you can
install the dependencies yourself:
- haversine: a convenient module to compute the distance between two GPS coordinates
- overpy: module used to fetch results with the Overpass API
- requests: to query manually Overpass API and cache interesting data
The main entrypoint is gtfsimporter/main.py. Run pipenvrun python -m gtfsimporter.main --help to get a list of available commands.
- When parsing GTFS data, only the longest trip for each direction is kept. Sometimes, shorter or different trips exist because some buses only run on a part of the line, or stop at different places depending on the time of day.
- When creating bus routes, this program expects bus stops to be already present in OpenStreetMap. This is purely to limit the size of each change, to make review easier.
- Route relations created by this program don't contain ways.
The usual way to interact with this program is to use its main entrypoint:
main.py. But a Makefile is also provided to help interacting with known GTFS
data providers. For known providers, the Makefile will fetch GTFS archive, unzip
it, and wrap gtfsimporter commands for convenience. For instance, the STM (Société de Transport de Montréal is a known provider, so you can just use
make stm-export-routes and it will do everything for you. Use make help for
more info.
The first run can be quite long because GTFS data are fully parsed to generate stops and routes lists. Cache files are then generated to make following invocations faster.
How do I setup this project?
pipenv sync
I want to generate stops
make stm-export-stops
I want to see the route for line 10 of the STM network, what should I do?
make stm-export-route route=10 # result is in work/stm/route_10.osm
Actually, I want all routes
make stm-export-routes # result is in work/stm/routes.osm
Sorry, I meant only missing routes
make stm-export-routes-missing
Route 10 has changed, what can I do?
make stm-update-route route=10
I want to update my local version of OSM data
make stm-clean-cache-osm # on following runs, cache will be re-generated