Lisbon's Carris Metropolitana GTFS, minified and compatibility-enhanced, per the following process:
- Removed commas from long route names to avoid compatibility issues with legacy CSV parsers
- Minified using
gtfs-tidy:gtfstidy -neOzscmACSPIW --fix --standard-route-types --explicit-calendar- Contains -50% shape points, -76% calendar_date entries (converted to calendar.txt), -99.5% services (duplicates)
- Compressed with zip level 9
- Total size is approx. -40% of original after compression