Dataset should not contain date ranges for services that have already expired.
[1] expired_calendar rule reference
| Code | expired_calendar |
|---|---|
| Standard | GTFS |
| Source | MobilityData canonical GTFS Schedule validator |
| Severity | WARNING |
| Category | currency |
| Maturity | draft |
| Tags | mobilitydata, gtfs, currency |
| Retrieved | 2026-06-12 |
| Reference | https://gtfs-validator.mobilitydata.org/rules.html#expired_calendar-rule |
