llms.txt

# GTFS Scorecard

> An open-source data quality scorecard for transit GTFS feeds worldwide, built for small and rural agencies.

GTFS Scorecard scores the data quality of more than 2,100 transit agencies' GTFS Schedule and GTFS-Realtime feeds daily, most of them in the United States and the rest across dozens of other countries. It runs the MobilityData canonical gtfs-validator, checks calendar freshness, rider accessibility fields, and realtime health, and translates every finding into a plain-language fix. Scoring methodology is documented with citations to the Caltrans California Transit Data Guidelines v4.0. Piloted with Unitrans (Davis, CA) and Yolobus (Yolo County, CA).

The primary users are transit managers at small and rural agencies who need to know if their feed is any good, and state program staff (Caltrans district liaisons, Cal-ITP customer success) preparing for agency check-ins.

## Scoring rubric

Four categories, each 0–100, combined into a weighted letter grade:

- Correctness (35%): gtfs-validator notices weighted by severity
- Freshness (20%): calendar runway, feed_info validity window, days until expiry
- Rider experience completeness (25%): wheelchair_boarding fields, fare data, headsigns, stop names, agency contact
- Realtime quality (20%): RT feed reachability, TripUpdate coverage, vehicle position plausibility

## Data API

All artifacts are static JSON served from GitHub Pages.

- Agency scorecard: https://gtfsscorecard.org/data/artifacts/{agency-id}/latest.json
- All-agencies index: https://gtfsscorecard.org/data/artifacts/directory.json
- National trend: https://gtfsscorecard.org/api/v1/trend.json
- State rollup: https://gtfsscorecard.org/data/artifacts/rollups/{state-slug}.json
- Rollup index: https://gtfsscorecard.org/data/artifacts/rollups/index.json

## Key pages

- Homepage: https://gtfsscorecard.org/
- All agencies: https://gtfsscorecard.org/agencies/
- Leaderboard: https://gtfsscorecard.org/leaderboard/
- National trend: https://gtfsscorecard.org/trends/
- Map: https://gtfsscorecard.org/map/
- Common problems: https://gtfsscorecard.org/problems/
- NTD readiness: https://gtfsscorecard.org/ntd/
- Realtime overview: https://gtfsscorecard.org/realtime/
- Submit an agency: https://gtfsscorecard.org/submit.html
- Scoring methodology: https://gtfsscorecard.org/about/

## Source

https://github.com/ChelseaKR/gtfs-scorecard