gtfs-rt Transport open dataset - Ar bus - Landerneau-Daoulas for Réseau urbain Ar bus

Resource details

File name: Ar bus - Landerneau-Daoulas

Format: gtfs-rt

Fichier GTFS-RT

This resource file is part of the dataset Réseau urbain Ar bus.

Download availability

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We test this resource download availability every hour by making an HTTP HEAD request with a timeout of 5 seconds. If we detect a downtime, we perform subsequent tests every 10 minutes, until the resource is back online.

For SIRI and SIRI Lite feeds, we perform a GET request: a 401 or 405 status code is considered successful. In case of HTTP 500, the feed will be considered unavailable, unless the body appears to contain SOAP.

Validation details

⚠️25 warnings

Validation carried out using the current GTFS file and the GTFS-RT the 2026-09-10 at 09:05 Europe/Paris using the MobilityData GTFS-RT validator.

Warnings

vehicle_id not populated W002 8 errors

vehicle_id should be populated for TripUpdates and VehiclePositions

Sample errors

trip_id 4 scolaire 08:40 does not have a vehicle_id
trip_id 1 scolaire 08:48 does not have a vehicle_id
trip_id 5 scolaire 08:42 does not have a vehicle_id
trip_id 6 scolaire 09:11 does not have a vehicle_id
trip_id 2 scolaire 07:05 does not have a vehicle_id

Header timestamp is older than 65 seconds W008 1 error

The data in a GTFS-realtime feed should always be less than one minute old

Sample errors

header.timestamp is 4 min 12 sec old which is greater than the recommended age of 65 seconds

schedule_relationship not populated W009 16 errors

trip.schedule_relationship and stop_time_update.schedule_relationship should be populated

Sample errors

trip_id 4 scolaire 08:40 stop_sequence 21 (and potentially more for this trip) does not have a schedule_relationship
trip_id 4 scolaire 08:40 does not have a schedule_relationship
trip_id 1 scolaire 08:48 stop_sequence 10 (and potentially more for this trip) does not have a schedule_relationship
trip_id 1 scolaire 08:48 does not have a schedule_relationship
trip_id 5 scolaire 08:42 stop_sequence 16 (and potentially more for this trip) does not have a schedule_relationship

Validate this GTFS-RT now

Previous validations

Here is a recap of all the error types encountered over the last 30 days.

Error ID	Description	Errors count	Number of occurences
W002	vehicle_id should be populated for TripUpdates and VehiclePositions	92	30 times (100 % of validations)
W008	The data in a GTFS-realtime feed should always be less than one minute old	30	30 times (100 % of validations)
W009	trip.schedule_relationship and stop_time_update.schedule_relationship should be populated	184	30 times (100 % of validations)

GTFS-RT feed content

Entities

Entities present in this feed at 2026-09-10 at 19:40 Europe/Paris.

trip_updates (1) vehicle_positions (0) service_alerts (0)

The timestamp field appears to be too old compared to the current time: the delay is 20,169 seconds. Try to update your feed at most every 30 seconds.

Entities seen in the last 7 days.

trip_updates

Decoded GTFS-RT feed

See full payload

Here is the decoded GTFS-RT feed Protobuf at 2026-09-10 at 19:40 Europe/Paris. You can look at the GTFS-RT documentation.


        {
  "entity": [
    {
      "id": "SM:1 scolaire 19:20",
      "tripUpdate": {
        "stopTimeUpdate": [
          {
            "arrival": {
              "delay": 1,
              "time": "1789061652"
            },
            "departure": {
              "delay": 1,
              "time": "1789062450"
            },
            "stopId": "12",
            "stopSequence": 19
          }
        ],
        "timestamp": "1789061988",
        "trip": {
          "routeId": "1",
          "tripId": "1 scolaire 19:20"
        }
      }
    }
  ],
  "header": {
    "gtfsRealtimeVersion": "1.0",
    "timestamp": "1789062017"
  }
}