Call-prep brief · checked 2026-08-01

South Shore Line

Grade B · 89.7 / 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
Realtime quality no change

Top three things to fix

Check with your AVL vendor that every vehicle assignment flows into TripUpdates, including school-day and tripper runs.
2 of 2 trips scheduled during the sampling window had no live predictions. Riders on those trips get schedule data dressed up as realtime. Caltrans expects every operating trip in TripUpdates.
Effort: A vendor data-mapping question.
Drop the short name from route_long_name and keep the long name descriptive, like 'Downtown via 5th Ave'.
Some route long names repeat the route's short name inside them. Apps show both names together, so riders see the number twice, like '5 5 Downtown'.
Effort: One field per flagged route.
Review the rule documentation for 'service_extends_far_in_the_future' at https://gtfs-validator.mobilitydata.org/rules.html and check the flagged rows in your feed.
Service extends far in the future (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: 2 of 2 trips scheduled during the sampling window had no live predictions.
Next action: Check with your AVL vendor that every vehicle assignment flows into TripUpdates, including school-day and tripper runs.
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

Agency: South Shore Line
Finding: scorecard_rt_trip_coverage
Feed evidence: 2 of 2 trips scheduled during the sampling window had no live predictions.
Why it matters: Riders on those trips get schedule data dressed up as realtime. Caltrans expects every operating trip in TripUpdates.
Requested change: Check with your AVL vendor that every vehicle assignment flows into TripUpdates, including school-day and tripper runs.
Recheck: Publish the changed feed at the same URL. On the next complete, comparable scorecard run, confirm that this finding is no longer reported.
Evidence: https://gtfsscorecard.org/agency/south-shore-line/?finding=scorecard_rt_trip_coverage#finding-handoff

NTD GTFS readiness: Ready

Published at a public URL, valid, current, and identified with agency_id: the four feed checks for RY2026 all hold here. Only your own D-10 and P-50 filings make that official; this is a heads-up, not a determination.

Published Ready: Published at a public URL.
Valid Ready: Passes validation with no errors.
Current Ready: Service data covers the next 1613 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): 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: http://www.mysouthshoreline.com/google/google_transit.zip
Last checked: 2026-08-01
Service window: 1613 days of service data remain. Last service date 2030-12-31.
Feed version: 2026_Monon_v3
Location: Indiana

Part of the Indiana 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.