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Some internal IDs use characters outside the basic text set.

These IDs are valid UTF-8 data. This warning is only about support in older apps. It does not mean that names in other languages are wrong.

Fix: Only change the flagged IDs if an app needs basic ASCII values. Update each place that uses the ID. Keep all names and headsigns in their original language. (A planned ID change, not a quick text cleanup.)

Finding code: non_ascii_or_non_printable_char · See MobilityData GTFS Validator rules (opens the validator rules on an external site)

Some rider-facing names are in ALL CAPS or all lowercase.

ALL-CAPS stop and headsign names are harder to read in apps and are read awkwardly by screen readers.

Fix: Use mixed case for stop names and headsigns (e.g. 'Main St & 2nd Ave', not 'MAIN ST & 2ND AVE'). (Often a bulk fix in your scheduling software.)

Finding code: mixed_case_recommended_field · Read the fix guide for mixed_case_recommended_field · See MobilityData GTFS Validator rules (opens the validator rules on an external site)

148 of 666 stops don't say whether a wheelchair user can board there.

Riders who use wheelchairs can't plan a trip when accessibility is marked 'unknown'; apps show no information at all.

Fix: Set wheelchair_boarding to 1 (accessible) or 2 (not accessible) for every stop. A field survey can start with the busiest stops. (A column in stops.txt; your scheduling software likely has it.)

Finding code: scorecard_wheelchair_boarding_unknown · Read the fix guide for scorecard_wheelchair_boarding_unknown · See GTFS Schedule reference (opens the GTFS Schedule reference on an external site)

Some service calendars have no days of the week switched on.

Trips tied to these calendars never run; they are dead data that can mask real schedule problems.

Fix: Delete the empty calendars or set their service days. (A few minutes in your scheduling software.)

Finding code: service_has_no_active_day_of_the_week · Read the fix guide for service_has_no_active_day_of_the_week · See MobilityData GTFS Validator rules (opens the validator rules on an external site)

Some stops sit far from the route line they belong to.

Trip planners may draw the bus route through the wrong streets or point riders to the wrong corner.

Fix: Check the flagged stops' coordinates and the route shape in your scheduling software; re-snap whichever is misplaced. (A few minutes per flagged stop.)

Finding code: stop_too_far_from_shape · Read the fix guide for stop_too_far_from_shape · See MobilityData GTFS Validator rules (opens the validator rules on an external site)

On some trips the stops fall along the route line in a different order than the schedule lists.

Trip planners can draw the bus doubling back or skipping ahead, which confuses riders reading the map.

Fix: Check the stop order and the shape direction in your scheduling software; the shape is often drawn backwards. (A few minutes per flagged trip.)

Finding code: stops_match_shape_out_of_order · See MobilityData GTFS Validator rules (opens the validator rules on an external site)

A file GTFS asks for (usually feed_info.txt) is missing.

feed_info.txt tells apps who publishes the feed and when it expires; without it nobody is warned before data goes stale.

Fix: Add feed_info.txt with publisher name, URL, language, and feed_start_date/feed_end_date. (One small file, set once in export settings.)

Finding code: missing_recommended_file · Read the fix guide for missing_recommended_file · See MobilityData GTFS Validator rules (opens the validator rules on an external site)

Many of the feed's trips don't run at all in the next 7 days.

It usually means old service periods are still in the export, making the feed bigger and harder to check.

Fix: Trim past service periods the next time you export. (One setting in most export tools.)

Finding code: trip_coverage_not_active_for_next7_days · Read the fix guide for trip_coverage_not_active_for_next7_days · See MobilityData GTFS Validator rules (opens the validator rules on an external site)

feed_info.txt is missing its start/end dates (the file itself is absent)

Apps and this scorecard can't warn anyone before the feed goes stale without stated validity dates.

Fix: Add feed_info.txt with feed_start_date and feed_end_date to your export. (Two fields, set once in export settings.)

Finding code: scorecard_missing_feed_info_dates · Read the fix guide for scorecard_missing_feed_info_dates · See MobilityData GTFS Validator rules (opens the validator rules on an external site)

The feed contains no fare information.

Riders see 'fare unknown' in trip planners and can't budget their trip; visitors are most affected.

Fix: Add fare_attributes.txt (or Fares v2 files) with your fare structure. If your service is fare-free, ask to have it marked fare-free instead. (A small file for most flat-fare systems.)

Finding code: scorecard_no_fare_data · Read the fix guide for scorecard_no_fare_data · See GTFS Best Practices (opens GTFS Best Practices on an external site)

Unsorted stop times (flagged by the MobilityData validator).

See the linked rule for what this affects.

Fix: Review the rule documentation for 'unsorted_stop_times' at https://gtfs-validator.mobilitydata.org/rules.html and check the flagged rows in your feed. (Varies.)

Finding code: unsorted_stop_times · See MobilityData GTFS Validator rules (opens the validator rules on an external site)

About 662 stop names are written in ALL CAPS.

Mixed-case names are easier to read in apps and are read more naturally by screen readers.

Fix: Rename stops to mixed case where the language has letter case (for example, 'Central Station'). (Often a bulk fix in your scheduling software.)

Finding code: scorecard_stop_names_all_caps · Read the fix guide for scorecard_stop_names_all_caps · See GTFS Best Practices (opens GTFS Best Practices on an external site)

The feed has a stretch of two weeks or more with no service running.

A long gap can mean dates were left out of the calendar. Apps then show no trips on those days.

Fix: Check whether the gap is real, like a seasonal break; if not, add the missing dates to the calendar. (A review of your calendar dates.)

Finding code: big_gap_in_service · Read the fix guide for big_gap_in_service · See MobilityData GTFS Validator rules (opens the validator rules on an external site)

feed_info.txt has no technical contact (feed_contact_email or feed_contact_url).

App makers and state data programs have nobody to email when they spot a problem. Small errors then sit in the feed for months.

Fix: Add feed_contact_email to feed_info.txt. (One field.)

Finding code: scorecard_no_feed_contact · Read the fix guide for scorecard_no_feed_contact · See MobilityData GTFS Validator rules (opens the validator rules on an external site)