← Back to the full scorecard

Board packet · transit data quality · checked 2026-07-11

Big Blue Bus

Grade F · 43.5 / 100

Down 0.3 points since 2026-07-10 (F to F).

What this grade measures

The quality of the schedule data this agency publishes for trip-planning apps: whether riders using Google Maps, Apple Maps, or Transit see current, correct, and complete information. It measures the data feed, not service quality or operations.

Progress this period

No newly cleared items this period. The score and trend above reflect where the feed stands today.

What needs attention next

Three improvements, in priority order, each sized so the board can see what it is approving:

  1. Re-export with a validity window that reaches at least 60 days out.

    Service data runs out in 28 day(s). When the calendar runs out, trip planners stop showing this agency. Fixing it now is calmer than after riders notice.

    Estimated effort: One export setting.

  2. Ask your AVL vendor why the feed stopped advancing; the GTFS-Realtime header timestamp should move forward on every publish.

    The realtime feed's last update was about 446 days old when sampled. A realtime feed this far behind has effectively stopped. Riders see buses that already left, or apps quietly fall back to the schedule while still showing a live label.

    Estimated effort: A vendor support ticket; treat it as a feed outage.

  3. Review the rule documentation for 'duplicate_key' at https://gtfs-validator.mobilitydata.org/rules.html and check the flagged rows in your feed.

    Duplicate key (flagged by the MobilityData validator). See the linked rule for what this affects.

    Estimated effort: Varies.

Where this agency stands

Ahead of 20% of all tracked agencies, and ahead of 23% of mid-size agencies nationwide.

Produced by the GTFS Scorecard, an open-source data quality tool. A data-quality read to support the board conversation, not an official compliance determination. Live scorecard: https://gtfsscorecard.org/agency/big-blue-bus-37/. Rubric v1.1, validator 8.0.1.