GTFS-RT is a standard to communicate about (public) transport data in Real Time.
This is a very simple GTFS-RT example client written in Python. It shows how to connect over websockets and start handling GTFS-RT messages received in the Protocol Buffer protocol.
While the client runs it will log Alerts, Trip Updates or Vehicle Positions depending on the content of the stream. This will look like long list of items like:
INFO VEHICLE:
latitude: 52.3706130981
longitude: 4.87039995193
INFO ALERT:
translation {
text: "Maatregelen : Geen \nMetro E rijdt op 12 feb van 23:30 uur niet tussen Leidschenveen en Den Haag. Gebruik pendelbus 63 HTM. Op 13 en 14 feb rijdt metro E niet Laan van NOI en Den Haag. Gebruik lijn 3/4 HTM.\n"
language: "nl"
}
INFO TRIP UPDATE:
trip {
trip_id: "28729980"
start_time: "17:35:00"
start_date: "20160121"
schedule_relationship: SCHEDULED
route_id: "18998"
}
This example client expects python >2.7 and pip to be installed on the system.
- Clone this example client
git clone https://github.com/plannerstack/gtfsrt-example-client.git
- Install its requirements with pip, make a virtualenv first if you want.
pip install -r requirements.txt
- Not sure how to set up a vrtualenv, or not sure what it is? Read: http://docs.python-guide.org/en/latest/dev/virtualenvs/
Run the example client by defining the stream as a environment variable and starting the process with python.
stream="ws://server.com:port/tripUpdates" python gtfsrt-example-client.py
For available demo streams see the docs at docs.plannerstack.org. You can alos join us on our Slack channel to get in direct contact. Visit: slack.plannerstack.org
This is only a simple example client to get some GTFS RT quickly on your screen. It can provide pointers to what is needed, but is not meant to be used as a base for any further development.
- Python Protocol Buffers: https://developers.google.com/protocol-buffers/docs/pythontutorial
- GTFS-RT standard: https://developers.google.com/transit/gtfs-realtime/
- Non existent in this example.
- Jasper Hartong - PlannerStack - 2016
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