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Call-prep brief · checked 2026-07-18

Bibus (Brest)

Grade F · 51.8 / 100

First check for this agency, so there is no trend yet.

For this call: lead with the grade and the three fixes below, then confirm the feed is current and the rider information is complete. Each fix is framed as a next step, not a failure.

What changed since the last check

No category changes since the last check.

Top three things to fix

  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.

    Effort: Varies.

  2. Add fare_attributes.txt (or Fares v2 files) with your fare structure. If your service is fare-free, ask to have it marked fare-free instead.

    The feed contains no fare information. Riders see 'fare unknown' in trip planners and can't budget their trip; visitors are most affected.

    Effort: A small file for most flat-fare systems.

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

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

    Effort: Varies.

Key facts

Feed URL
https://s3.eu-west-1.amazonaws.com/files.orchestra.ratpdev.com/networks/bibus/exports/medias.zip
Last checked
2026-07-18
Service window
43 days of service data remain. Last service date 2026-08-30.
Feed version
2026-07-10 14:30:38.543242 UTC
Location
Bretagne, France

A data-quality and completeness read to support an agency conversation. Not an official compliance determination. Rubric v1.2, validator 8.0.1.