GTFS Schedule Validation Report

This report was generated by the Canonical GTFS Schedule validator, version 7.1.0 at 2026-04-23T18:58:03Z,
for the dataset file:///shared/charleston_387eefa8.zip. No country code was provided.

Use this report alongside our documentation.

Summary

Agencies included

  • Charleston Area Regional Transportation Authority

Feed Info

Publisher Name:
Trillium Solutions, Inc.
Feed Email:
support+carta-sc-us@trilliumtransit.com
Feed Language:
English
Feed Start Date:
2026-01-19
Feed End Date:
2026-05-22

Files included

  1. agency.txt
  2. areas.txt
  3. booking_rules.txt
  4. calendar.txt
  5. calendar_attributes.txt
  6. calendar_dates.txt
  7. directions.txt
  8. fare_attributes.txt
  9. fare_rules.txt
  10. farezone_attributes.txt
  11. feed_info.txt
  12. frequencies.txt
  13. linked_datasets.txt
  14. location_groups.txt
  15. routes.txt
  16. runcut.txt
  17. shapes.txt
  18. stop_attributes.txt
  19. stop_times.txt
  20. stops.txt
  21. timetable_stop_order.txt
  22. timetables.txt
  23. transfers.txt
  24. trips.txt

Counts

  • Agencies: 1
  • Blocks: 129
  • Routes: 24
  • Shapes: 86
  • Stops: 1107
  • Trips: 1854

Specification Compliance report

290 notices reported (0 errors, 248 warnings, 42 infos)

Notice Code Severity Total
feed_expiration_date30_days WARNING 1

feed_expiration_date30_days

Dataset should cover at least the next 30 days of service.

At any time, the GTFS dataset should cover at least the next 30 days of service, and ideally for as long as the operator is confident that the schedule will continue to be operated.

You can see more about this notice here.

csvRowNumber (?) The row number of the faulty record. currentDate (?) Current date (YYYYMMDD format). feedEndDate (?) Feed end date (YYYYMMDD format). suggestedExpirationDate (?) Suggested expiration date (YYYYMMDD format).
2 "20260423" "20260522" "20260523"
mixed_case_recommended_field WARNING 1

mixed_case_recommended_field

This field has customer-facing text and should use Mixed Case (should contain upper and lower case letters).

This field contains customer-facing text and should use Mixed Case (upper and lower case letters) to ensure good readability when displayed to riders. Avoid the use of abbreviations throughout the feed (e.g. St. for Street) unless a location is called by its abbreviated name (e.g. “JFK Airport”). Abbreviations may be problematic for accessibility by screen reader software and voice user interfaces.

Good examples:
Field Text Dataset
"Schwerin, Hauptbahnhof" Verkehrsverbund Berlin-Brandenburg
"Red Hook/Atlantic Basin" NYC Ferry
"Campo Grande Norte" Carris
Bad examples:
Field Text
"GALLERIA MALL"
"3427 GG 17"
"21 Clark Rd Est"

You can see more about this notice here.

filename (?) Name of the faulty file. fieldName (?) Name of the faulty field. fieldValue (?) Faulty value. csvRowNumber (?) The row number of the faulty record.
"stops.txt" "stop_name" "US 176 / US 17A" 199
route_color_contrast WARNING 1

route_color_contrast

Insufficient route color contrast.

A route's color and route_text_color should be contrasting.

You can see more about this notice here.

routeId (?) The id of the faulty record. csvRowNumber (?) The row number of the faulty record. routeColor (?) The faulty record's HTML route color. routeTextColor (?) The faulty record's HTML route text color.
"3606" 5 "#DDCD69" "#FFFFFF"
stop_without_stop_time WARNING 245

stop_without_stop_time

A stop in stops.txt is not referenced by any stop_times.stop_id.

Such stops are not used by any trip and normally do not provide user value. This notice may indicate a typo in stop_times.txt.

You can see more about this notice here.

Only the first 50 of 245 affected records are displayed below.

csvRowNumber (?) The row number of the faulty record. stopId (?) The id of the faulty stop. stopName (?) The name of the faulty stop.
21 "2324961" "1 Riverwood Drive Moncks Corner SC"
22 "2324962" "1003 Hwy 52 Moncks Corner SC"
26 "2329765" "Berlin G. Myers Parkway Park & Ride"
33 "2332209" "Riverland Dr / Canal St"
38 "2332225" "2954 S. Live Oak Drive (SC Voc Rehab)"
41 "2332435" "Main Rd / Savannah Hwy"
42 "2332436" "Main Rd. / Hwy 17"
43 "2332437" "Main Road / River Road"
44 "2332438" "Main Rd / River Rd"
45 "2332439" "Main Rd / Belvedere Rd"
46 "2332440" "Main Rd. & Belvedere Rd."
47 "2332441" "St. Johns High School @ Main Rd"
48 "2332442" "St. Johns High School / Main Rd"
49 "2332444" "Bohicket Rd / Maybank Hwy"
50 "2332445" "Sea Island Medical Center / Maybank Hwy"
51 "2332446" "Calvary AME Church / Bohicket Road"
52 "2332447" "Calvary AME Church / Bohicket Rd"
53 "2332448" "Hebron Zion Presby Church / Bohicket Road"
54 "2332449" "Hebron Zion Presby. Church / Bohicket Rd"
55 "2332450" "Bohicket Road / Esau Jenkins Road"
56 "2332451" "Bohicket Rd / Esau Jenkins Rd"
57 "2332452" "Betsy Kerrison Pkwy / River Road"
58 "2332453" "Betsy Kerrison Pkwy / River Rd"
59 "2332454" "Betsy Kerrison Pkwy / Habitat Blvd"
60 "2332455" "River Rd / Blackground Rd"
61 "2332456" "River Rd. & Blackground Rd."
62 "2332457" "River Rd / Blind Rd"
63 "2332458" "River Rd. & Blind Rd."
64 "2332459" "River Rd / Abbapoola Rd"
67 "2335606" "Riverland Dr / James Island County Park"
68 "2335607" "Riverland Dr / Dawson Rd"
70 "2335616" "Mt. Zion Elementary School"
71 "2335617" "River Rd / Hunters Rd"
72 "2335618" "River Rd. & Hunters Rd."
73 "2335619" "River Road / Evans Road"
74 "2335620" "River Rd / Evans Rd"
75 "2335621" "River Rd / Maybank Hwy"
76 "2335622" "Maybank Hwy / Berkeley Electric Coop"
77 "2335623" "Maybank Hwy / Berkeley Electric Cooperative"
78 "2335624" "Main Road / Brownswood Road"
79 "2335625" "Main Rd / Brownswood Rd"
80 "2335630" "Brownswood Road / Island Estates Drive"
81 "2335631" "Brownswood Rd / Island Estates Dr"
82 "2335632" "Brownswood Road / Murrywood Road"
83 "2335634" "Brownswood Rd / Murrywood Rd"
84 "2335752" "Stoney Landing Rd / Home Telecom"
85 "2335753" "Stoney Landing Rd / Berk. Comm. Mental Health"
86 "2335754" "Hwy. 52 / Waffle House"
87 "2335755" "Hwy 52 / Barony St"
88 "2335756" "551 Rembert C Dennis Blvd"
unknown_column INFO 34

unknown_column

A column name is unknown.

You can see more about this notice here.

filename (?) The name of the faulty file. fieldName (?) The name of the unknown column. index (?) The index of the faulty column.
"areas.txt" "wkt" 2
"agency.txt" "tts_agency_name" 8
"calendar.txt" "service_name" 2
"calendar_dates.txt" "holiday_name" 3
"feed_info.txt" "feed_license" 5
"feed_info.txt" "feed_id" 10
"routes.txt" "min_headway_minutes" 11
"routes.txt" "eligibility_restricted" 12
"routes.txt" "tts_route_short_name" 15
"routes.txt" "tts_route_long_name" 16
"stop_times.txt" "start_service_area_id" 11
"stop_times.txt" "end_service_area_id" 12
"stop_times.txt" "start_service_area_radius" 13
"stop_times.txt" "end_service_area_radius" 14
"stop_times.txt" "mean_duration_factor" 21
"stop_times.txt" "mean_duration_offset" 22
"stop_times.txt" "safe_duration_factor" 23
"stop_times.txt" "safe_duration_offset" 24
"stop_times.txt" "tts_stop_headsign" 25
"stop_times.txt" "min_arrival_time" 26
"stop_times.txt" "max_departure_time" 27
"stops.txt" "position" 13
"stops.txt" "direction" 14
"trips.txt" "trip_type" 11
"trips.txt" "drt_max_travel_time" 12
"trips.txt" "drt_avg_travel_time" 13
"trips.txt" "drt_advance_book_min" 14
"trips.txt" "drt_pickup_message" 15
"trips.txt" "drt_drop_off_message" 16
"trips.txt" "continuous_pickup_message" 17
"trips.txt" "continuous_drop_off_message" 18
"trips.txt" "tts_trip_headsign" 19
"trips.txt" "tts_trip_short_name" 20
"location_groups.txt" "location_id" 2
unknown_file INFO 8

unknown_file

A file is unknown.

You can see more about this notice here.

filename (?) The name of the unknown file.
"calendar_attributes.txt"
"directions.txt"
"farezone_attributes.txt"
"runcut.txt"
"stop_attributes.txt"
"timetable_stop_order.txt"
"timetables.txt"
"linked_datasets.txt"