Monthly GTFS Quality Report
Victor Valley Transit Authority  ·  April 2023

This is a monthly report, generated by the California Integrated Travel Project (Cal-ITP), summarizing issues discovered by MobilityData’s GTFS Validator. This report is available for viewing by the general public to support continuous improvement of GTFS data and the experience of transit passengers.

Current GTFS Feed Info

Feed End Date
Days With No Service
Has RT Feed
This feed includes GTFS-Realtime (GTFS-RT). Realtime data contributes to a better rider experience by letting riders know exactly when their bus or train is coming, as well as detour and trip cancellation info. It also enables Cal-ITP to support transit agencies with analyses such as our California Transit Speed Maps, viewable by clicking the button above. Certain feeds may include RT data but not have a speed map available. To generate a speed map, we require GTFS-RT Vehicle Positions data that matches the rest of the GTFS feed. Additionally, we don't currently generate speed maps for rail service. Please contact us at [email protected] with any questions about GTFS-RT data or suggestions for analysis products.
View Speedmap

Source URLs

Note: Links may lead directly to downloads and/or to resources that require authentication

About the April Daily Service Level Charts

  • These charts show the total hours of transit service described by the active feed for each day.
  • Since service levels often vary by the day of the week, it is split into three charts for weekdays, Saturdays, and Sundays.
  • Flat lines indicate consistent levels of service throughout the month.
  • Short drops may indicate temporary reduced service, such as for holidays, gaps in feed publishing, or potential inaccuracies.
  • Please reach out to our help desk at [email protected] with any questions.

Service hours per weekday in the active feed

Service hours per Saturday in the active feed

Service hours per Sunday in the active feed

About the April Identifier Change Charts

  • These charts show the percentage of stop and route IDs that have changed since the previous month.
  • Stop and route IDs are important identifiers for GTFS feed consumers to correctly parse feeds.
  • It is a GTFS Best Practice to keep these consistent between feed versions whenever possible.
  • More than 5% being new or dropped is a cause for attention, especially if there hasn't been a major service or route change.
  • Please reach out to our help desk at [email protected] with any questions.

Changes from April 01 to April 30

Consistency with the California GTFS Minimum Guidelines

Do the following files/fields exist? 2023-04-04 2023-04-18
Visual display shapes.txt
Navigation levels.txt
Fares fare_leg_rules.txt
Technical contacts feed_info.txt
Validation errors observed
Error Name Error Description Severity
unknown_file A file is unknown. INFO
duplicate_key The values of the given key and rows are duplicates. ERROR
block_trips_with_overlapping_stop_times Trips with the same block id have overlapping stop times. ERROR
leading_or_trailing_whitespaces The value in CSV file has leading or trailing whitespaces. WARNING
missing_recommended_field The given field has no value in some input row, even though values are recommended. WARNING
fast_travel_between_far_stops A transit vehicle moves too fast between far consecutive stops (more than in 10 km apart). WARNING
stop_without_stop_time A stop in stops.txt is not referenced by any stop_times.stop_id, so it is not used by any trip. WARNING
fast_travel_between_consecutive_stops A transit vehicle moves too fast between two consecutive stops. The speed threshold depends on route type. WARNING
stops_match_shape_out_of_order Two stop entries in stop_times.txt are different than their arrival-departure order as defined by the shape in the shapes.txt file. WARNING
stop_too_far_from_shape_using_user_distance A stop time entry that is a large distance away from the location of the shape in shapes.txt as defined by shape_dist_traveled values. WARNING
missing_feed_info_date Even though feed_info.start_date and feed_info.end_date are optional, if one field is provided the second one should also be provided. WARNING
stop_time_with_arrival_before_previous_departure_time For a given trip_id, the arrival_time of (n+1)-th stoptime in sequence must not precede the departure_time of n-th stoptime in sequence in stop_times.txt. ERROR
same_name_and_description_for_route The GTFS spec defines routes.txt route_desc as: 'Description of a route that provides useful, quality information. Do not simply duplicate the name of the route.' WARNING
decreasing_or_equal_stop_time_distance When sorted by stop_times.stop_sequence, two consecutive entries in stop_times.txt should have increasing distance, based on the field shape_dist_traveled. If the values are equal, this is considered as an error. ERROR
equal_shape_distance_same_coordinates When sorted by shape.shape_pt_sequence, the values for shape_dist_traveled must increase along a shape. Two consecutive points with equal values for shape_dist_traveled and the same coordinates indicate a duplicative shape point. WARNING