GTFS Scorecard: Detroit Department of Transportation (DDOT) feed quality changes Grade moves, expiry warnings, and score swings for Detroit Department of Transportation (DDOT)'s GTFS feed. tag:gtfsscorecard.org,2026:agency/detroit-department-of-transportation-ddot/changes 2026-07-07T00:00:00Z GTFS Scorecard GTFS Scorecard Detroit Department of Transportation (DDOT): Grade went C to F, freshness fell 100 points. tag:gtfsscorecard.org,2026:agency/detroit-department-of-transportation-ddot/2026-07-07/grade_change 2026-07-07T00:00:00Z Grade went C to F, freshness fell 100 points. Detroit Department of Transportation (DDOT): Grade went F to C, freshness rose 95 points. tag:gtfsscorecard.org,2026:agency/detroit-department-of-transportation-ddot/2026-07-01/grade_change 2026-07-01T00:00:00Z Grade went F to C, freshness rose 95 points. Detroit Department of Transportation (DDOT): Grade went C to F, freshness fell 87 points. tag:gtfsscorecard.org,2026:agency/detroit-department-of-transportation-ddot/2026-06-25/grade_change 2026-06-25T00:00:00Z Grade went C to F, freshness fell 87 points. Detroit Department of Transportation (DDOT): Grade went F to C, freshness rose 83 points. tag:gtfsscorecard.org,2026:agency/detroit-department-of-transportation-ddot/2026-06-24/grade_change 2026-06-24T00:00:00Z Grade went F to C, freshness rose 83 points.