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Call-prep brief · checked 2026-08-01

Chattanooga Area Regional Transportation Authority (CARTA)

Grade F · 32.6 / 100

Unchanged since 2026-07-31.

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

What changed since the last check

  • Correctness no change
  • Freshness no change
  • Rider experience no change

Top three things to fix

  1. Re-export the feed with a calendar that reaches further out, and set feed_info feed_end_date past your next service change.

    Service data ended 714 day(s) ago. When the calendar runs out, trip planners stop showing this agency even though the buses are still running. Riders are told the service does not exist.

    Effort: Usually one export setting; export on a schedule so it never lapses again.

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

    Equal shape distance diff coordinates (flagged by the MobilityData validator). See the linked rule for what this affects.

    Effort: Varies.

Finding handoff

Move one finding to a recheck

Select one finding. Copy the request, make the change in the feed-producing tool, then compare the next complete run.

Feed evidence
Service data ended 714 day(s) ago.
Next action
Re-export the feed with a calendar that reaches further out, and set feed_info feed_end_date past your next service change.
Recheck
Publish the changed feed at the same URL. On the next complete, comparable scorecard run, confirm that this finding is no longer reported.
Copy handoff text

Ready to send to the agency

Hi Chattanooga Area Regional Transportation Authority (CARTA) team, Service data ended 714 day(s) ago. When the calendar runs out, trip planners stop showing this agency even though the buses are still running. Riders are told the service does not exist. The fix is usually one export setting: Re-export the feed with a calendar that reaches further out, and set feed_info feed_end_date past your next service change. This came from your GTFS data quality scorecard, which checks the feed you publish and lists the fixes in plain language: https://gtfsscorecard.org/agency/chattanooga-area-regional-transportation-authority-carta-2082/

Copy this note from the full scorecard.

NTD GTFS readiness: Not ready

Resolve this before you certify on the D-10. 1 validator error to resolve. Service data expired 714 days ago, so FTA would find the link out of date.

Published Ready
Published at a public URL.
Valid Needs attention
1 validator error to resolve.
Current Not ready
Service data expired 714 days ago, so FTA would find the link out of date.
agency_id provided Ready
agency.txt provides agency_id. For RY2026, keep one stable value for each NTD reporter represented in the feed and crosswalk each value on the P-50 form.

agency_id equals NTD ID (optional): Not checked yet. This feed provides agency_id. For RY2026, keep one stable value for each NTD reporter represented in the feed and crosswalk it on the P-50 form. The value does not need to equal the five-digit NTD ID; we do not have that ID on file, so the optional equality comparison is not checked yet.

Key facts

Feed URL
https://www.gocarta.org/wp-content/uploads/2024/01/GTFS.zip
Last checked
2026-08-01
Service window
Feed has expired. Last service date 2024-08-17.
Feed version
S1000099
Location
Tennessee

Part of the Tennessee portfolio: see where this agency sits among the state's feeds before the call.

A data-quality and completeness read to support an agency conversation. Not an official compliance determination. Rubric v1.3, validator 8.0.1.