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Real-Time Data

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I have downloaded the real-time data using the API keys. However, it is in protobuf file format and the guide mentioned that I need to decode the file to get the structured data. I read the resources provided but there is no specific code to extract the real-time data. Is there any simple method to decode the protobuf file?

Michelle Teo

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Hej Michelle,

Googles GTFS-RT dokumentation inkluderar exempel i flera språk:
https://developers.google.com/transit/gtfs-realtime/examples/code-samples

Hälsningar,
Bert

Bert på Trafiklab
2 Dec 2022
Hi Bert, I tried the python code and inserted the URL for SL real-time data with my API keys. However, there is no output when I execute the code.

Michelle Teo
2 Dec 2022
The python exempel will print out trip updates only. Did you try this with a TripUpdates feed or with another (VehiclePositions, ServiceAlerts) feed?

Bert på Trafiklab
2 Dec 2022
I tried this code with Vehicle Positions. How should I amend the code to extract the structured data? I'm interested to extract the data so that I can compare against the static data, if possible.

Michelle Teo
2 Dec 2022
The data structure is defined here:
https://developers.google.com/transit/gtfs-realtime/examples/vehicle-positions

You have to write your own script in order to extract the data fields you want to use.

Regards,
Bert

Bert på Trafiklab
2 Dec 2022

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