AI-generated Key Takeaways
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          This page provides links to various mailing lists for discussions regarding public transit data, software, and the GTFS format. 
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          Several mailing lists focus on specific topics such as the transitfeed project, GTFS-realtime, and proposed GTFS changes. 
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          The page also includes links to general transit developer discussions and agency-specific mailing lists for developers. 
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          Additional resources like the Google Transit Partners Help Center and websites with public GTFS feeds are provided. 
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          Websites that serve as registries of feeds, including Gtfs Data Exchange, TransitFeeds, and Transit.land are listed. 
Mailing Lists
There are a number of mailing lists that can be good resources when you have questions about public transit data, software, formats like GTFS and GTFS-realtime, and other issues:
- transitfeed: discussion of the open-source transitfeed project, as well of discussion of the GTFS specification and associated tools.
- gtfs-realtime: discussion of the GTFS-realtime specification.
- gtfs-changes: discussion of proposal for extending the GTFS specification, as outlined in the GTFS Changes document.
- transit-developers: general transit developer discussions. Many transit agencies also have their own developer mailing lists specific to the agency. For example:
Check with your local transit agency to see if they have a mailing list of their own.
Other Resources
- Google Transit Partners Help Center
- GoogleTransitDataFeed Public GTFS feed list: lists a number of public GTFS feeds
- If you provide a transportation service that is open to the public, and operates with fixed schedules and routes, we welcome your participation; it is simple and available at no charge. 
- Public GTFS feed list - TransitWiki.org "Publicly-accessible public transportation data" page. 
- Several websites serve as a registry of feeds: