Call-prep brief · checked 2026-09-01
Mitteldeutscher Verkehrsverbund (MDV)
Grade F · 31.3 / 100
Unchanged since 2026-08-31.
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
- Correctness no change
- Freshness no change
- Rider experience no change
Top three things to fix
Add feed_start_date and feed_end_date to feed_info.txt and include calendar end dates in your export.
Neither feed_info.txt nor the calendars state when service ends. Nobody can tell when this feed will go stale.
This one is about the feed as a whole, so there is no share of it to count.
Effort: Likely a one-time export setting.
Review the rule documentation for 'missing_required_file' at https://gtfs-validator.mobilitydata.org/rules.html and check the flagged rows in your feed.
Missing required file (flagged by the MobilityData validator). See the linked rule for what this affects.
This is a validator notice, and the validator decides what each instance covers, so no share of the network can be read from it here.
Effort: Varies.
Review the rule documentation for 'missing_calendar_and_calendar_date_files' at https://gtfs-validator.mobilitydata.org/rules.html and check the flagged rows in your feed.
Missing calendar and calendar date files (flagged by the MobilityData validator). See the linked rule for what this affects.
This is a validator notice, and the validator decides what each instance covers, so no share of the network can be read from it here.
Effort: Varies.
Riders and need behind these fixes
- Rider-trip figures come from the United States National Transit Database, which does not cover this feed's country.
- The served-area need overlays cover the United States and Canada, so none of them applies to this feed.
These describe this feed only. They do not rank agencies, and they do not change the grade or the order of the fixes.
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
- Neither feed_info.txt nor the calendars state when service ends.
- Next action
- Add feed_start_date and feed_end_date to feed_info.txt and include calendar end dates in your export.
- 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
- Feed evidence
- Missing required file (flagged by the MobilityData validator).
- Next action
- Review the rule documentation for 'missing_required_file' 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
- Feed evidence
- Missing calendar and calendar date files (flagged by the MobilityData validator).
- Next action
- Review the rule documentation for 'missing_calendar_and_calendar_date_files' 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
Key facts
- Feed URL
- https://www.mdv.de/media/file/c2422660
- Last checked
- 2026-09-01
- Service window
- Expiry date not stated in the feed.
- Location
- Sachsen, Germany
A data-quality and completeness read to support an agency conversation. Not an official compliance determination. Rubric v1.3, validator 8.0.1.