GTFS Scorecard: Marshalltown Municipal Transit feed quality changes Grade moves, expiry warnings, and score swings for Marshalltown Municipal Transit's GTFS feed. tag:gtfsscorecard.org,2026:agency/marshalltown-municipal-transit/changes 2026-07-04T00:00:00Z GTFS Scorecard GTFS Scorecard Marshalltown Municipal Transit: Grade went C to D, freshness fell 3 points. tag:gtfsscorecard.org,2026:agency/marshalltown-municipal-transit/2026-07-04/grade_change 2026-07-04T00:00:00Z Grade went C to D, freshness fell 3 points. Marshalltown Municipal Transit: Feed entered the expiry window (30 days of service left). tag:gtfsscorecard.org,2026:agency/marshalltown-municipal-transit/2026-07-01/expiry 2026-07-01T00:00:00Z Feed entered the expiry window (30 days of service left).