{"id":28120797,"url":"https://github.com/mobilitydata/gtfs_diff","last_synced_at":"2026-03-17T19:29:25.823Z","repository":{"id":160471073,"uuid":"635333851","full_name":"MobilityData/gtfs_diff","owner":"MobilityData","description":"Specification of the GTFS Diff","archived":false,"fork":false,"pushed_at":"2025-12-03T20:35:53.000Z","size":122,"stargazers_count":8,"open_issues_count":3,"forks_count":1,"subscribers_count":9,"default_branch":"main","last_synced_at":"2025-12-07T02:07:31.833Z","etag":null,"topics":[],"latest_commit_sha":null,"homepage":null,"language":null,"has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"apache-2.0","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/MobilityData.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":"CONTRIBUTING.md","funding":null,"license":null,"code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":"AUTHORS.md","dei":null}},"created_at":"2023-05-02T13:24:00.000Z","updated_at":"2025-10-19T16:49:20.000Z","dependencies_parsed_at":"2024-03-26T10:03:08.355Z","dependency_job_id":null,"html_url":"https://github.com/MobilityData/gtfs_diff","commit_stats":null,"previous_names":["mobilitydata/gtfs_diff"],"tags_count":0,"template":false,"template_full_name":null,"purl":"pkg:github/MobilityData/gtfs_diff","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/MobilityData%2Fgtfs_diff","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/MobilityData%2Fgtfs_diff/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/MobilityData%2Fgtfs_diff/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/MobilityData%2Fgtfs_diff/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/MobilityData","download_url":"https://codeload.github.com/MobilityData/gtfs_diff/tar.gz/refs/heads/main","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/MobilityData%2Fgtfs_diff/sbom","scorecard":null,"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":286080680,"owners_count":30629378,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2026-03-17T17:32:55.572Z","status":"ssl_error","status_checked_at":"2026-03-17T17:32:38.732Z","response_time":56,"last_error":"SSL_read: unexpected eof while reading","robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":false,"can_crawl_api":true,"host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":[],"created_at":"2025-05-14T07:41:46.653Z","updated_at":"2026-03-17T19:29:25.797Z","avatar_url":"https://github.com/MobilityData.png","language":null,"readme":"# GTFS Diff : A specification to list differences between GTFS files\n\n## Goal\nGTFS Diff aims at providing a universal and unified way to list differences between two GTFS files. It is designed to be easily understandable by humans, but also easily produced and processed by computers.\n\n## Context\n[transport.data.gouv.fr](transport.data.gouv.fr) is the French National Access Point for mobility data. It is operated by the French Ministry of Transportation. The platform gives access to a variety of mobility data, including a number of GTFS files.\n\nIt happens frequently that companies or individuals using this data modify it. For example to correct spelling mistakes in a stop name, add color to routes or wheelchair information.\n\nEvery time a GTFS file is updated by the producer with a recent schedule, those corrections need to be applied again. We lack a universal way to list a series of modifications with the corresponding explanations about the change.\n\nIt also happens that data users share their enhanced GTFS file on our platform. We then lack a way to easily understand the changes they made. If two users share their own modified version of a GTFS, we lack a way to merge their respective changes into a single file.\n\nIt is also hard for reusers to review the changes made to a given GTFS file by its official producer, making it harder to understand the impact of the changes on their systems.\n\n## Resources\n- the [GTFS Diff specification](specification.md)\n- [Online tool](https://transport.data.gouv.fr/tools/gtfs_diff) to generate a GTFS Diff on transport.data.gouv.fr\n- [Source code](https://github.com/etalab/transport-site/blob/b6bdd7749192e52bccb9ecbb33e436b56c9fd693/apps/transport/lib/transport/gtfs_diff.ex) of the implementation (in Elixir)\n\n## Acknowledgements\n\nThis project was initially created by the [French National Access Point](https://transport.data.gouv.fr/) to ease communication between data producers and reusers and to monitor changes made by data producers over time in their GTFS feeds.\n\nIn June 2023, MobilityData and the French NAP announced a partnership to maintain and further improve the GTFS Diff specification.\n","funding_links":[],"categories":[],"sub_categories":[],"project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fmobilitydata%2Fgtfs_diff","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fmobilitydata%2Fgtfs_diff","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fmobilitydata%2Fgtfs_diff/lists"}