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Board packet · transit data quality · checked 2026-07-09

Mountain Line

Grade F · 28.3 / 100

Unchanged since 2026-07-08.

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

    Trip distance exceeds shape distance (flagged by the MobilityData validator). See the linked rule for what this affects.

    Estimated effort: Varies.

  2. 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.

  3. Re-generate shape distances in your export; flag to your vendor if it persists.

    Some trips have stop times whose distances along the route go backwards. Apps can show buses jumping backwards or mis-order stops.

    Estimated effort: Usually an export-tool fix, not hand editing.

This feed URL points at the TransitFeeds archive, which is no longer maintained. Before any single fix, publish the feed from a live URL you control and update the listings that still point here.

Where this agency stands

Ahead of 5% of all tracked agencies, and ahead of 4% 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/mountain-line-1148/. Rubric v1.1, validator 8.0.1.