GTFS Scorecard

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Call-prep brief · checked 2026-08-01

San Diego International Airport, Metropolitan Transit System (MTS)

Grade F · 44.5 / 100

Down 0.4 points since 2026-07-31 (F to F).

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 down 1.7
  • Rider experience no change

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. 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.

  3. Turn on shape cleanup in your export tool, or drop the repeated points from shapes.txt.

    Some route lines list the same point twice in a row. Repeated points don't hurt riders, but they can skew distance math and hint at a shaky export.

    Effort: Usually one export setting.

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
Trip distance exceeds shape distance (flagged by the MobilityData validator).
Next action
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.
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

NTD GTFS readiness: Needs attention

This feed is close to NTD-ready. 2 validator errors to resolve.

Published Ready
Published at a public URL.
Valid Needs attention
2 validator errors to resolve.
Current Ready
Service data covers the next 35 days.
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): Different (allowed). Your feed's agency_id is MTS, SAN; your National Transit Database ID is 90026. A feed that serves several agencies (a shared regional feed) can legitimately carry more than one agency_id. The values do not need to equal the five-digit NTD ID, so this difference is allowed and carries no score. Confirm that P-50 crosswalks agency_id MTS, SAN to NTD ID 90026, and keep the feed value stable. Do not change it solely to make the two values equal.

The bar this score answers to

The published guideline in California is California Transit Data Guidelines. Caltrans' published quality guidelines and compliance checklist; this rubric is anchored to them.

Key facts

Feed URL
https://www.sdmts.com/google_transit_files/google_transit.zip
Last checked
2026-08-01
Service window
35 days of service data remain. Last service date 2026-09-05.
Feed version
Generated on 20260707
Location
California

Part of the California 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.