Feed status · checked 2026-08-01
Réseau urbain Lib'Bus
Based on the feed this agency publishes
Service mode Bus
up 8.2 since 2026-07-31 · D → D
Catalogued in Hauts-de-France, France.
A data-quality and completeness lens to help an agency improve its GTFS feed. Not an official compliance determination from any transit program. New to this? How to read your scorecard. Interactive view of this scorecard. Rubric v1.3, validator 8.0.1.
Checked for changes 78 minutes ago; last changed 9 days ago.
Measured 4 of 4 score categories from the agency's own feed.
How we measured this
Confidence in this measurement: high.
- All four score categories were measured this run.
- Realtime was sampled in one bounded window of 6 snapshots.
- The feed was downloaded from the agency's own URL.
Confidence describes how much the pipeline could measure this run, not the feed itself. It never changes the grade.
Top things to fix
Review the rule documentation for 'trip_distance_exceeds_shape_distance' at https://gtfs-validator.mobilitydata.org/rules.html and check the flagged rows in your feed.
Trip distance exceeds shape distance (flagged by the MobilityData validator). See the linked rule for what this affects.
⏱ Varies.worth about +24 points in its category
Set wheelchair_boarding to 1 (accessible) or 2 (not accessible) for every stop. A field survey can start with the busiest stops.Likely your team
43 of 43 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.
⏱ A column in stops.txt; your scheduling software likely has it.worth about +25 points in its category
Set wheelchair_accessible on every trip. If every vehicle is accessible, this may be one default; otherwise use the value for each trip.Likely your export tool
307 of 307 trips don't say whether the vehicle is wheelchair accessible. Even with accessible stops, riders need to know the bus itself can take them.
⏱ A default or per-trip field in your export.worth about +15 points in its category
Finding handoff
Move one finding to a recheck
Select one finding. Copy the request, make the change in the feed-producing tool, then compare the next complete run.
- Feed evidence
- Trip distance exceeds shape distance (flagged by the MobilityData validator).
- Next action
- Review the rule documentation for 'trip_distance_exceeds_shape_distance' at https://gtfs-validator.mobilitydata.org/rules.html and check the flagged rows in your feed.
- Recheck
- Publish the changed feed at the same URL. On the next complete, comparable scorecard run, confirm that this finding is no longer reported.
Copy handoff text
- Feed evidence
- 43 of 43 stops don't say whether a wheelchair user can board there.
- Next action
- Set wheelchair_boarding to 1 (accessible) or 2 (not accessible) for every stop. A field survey can start with the busiest stops.
- Recheck
- Publish the changed feed at the same URL. On the next complete, comparable scorecard run, confirm that this finding is no longer reported.
Copy handoff text
- Feed evidence
- 307 of 307 trips don't say whether the vehicle is wheelchair accessible.
- Next action
- Set wheelchair_accessible on every trip. If every vehicle is accessible, this may be one default; otherwise use the value for each trip.
- Recheck
- Publish the changed feed at the same URL. On the next complete, comparable scorecard run, confirm that this finding is no longer reported.
Copy handoff text
How to make and check these changes
Check the result on the published feed. Read the guide, make the change in your tool, and use the next comparable run to see whether the finding is still reported. Only an action or ticket record can attribute who made the change.
Review the rule documentation for 'trip_distance_exceeds_shape_distance' at https://gtfs-validator.mobilitydata.org/rules.html and check the flagged rows in your feed.
Make the change. Make this change in whatever tool produces your feed, then re-export.
Check the result. The next scorecard run checks this finding again. If a comparable check no longer reports it, the feed's clearance log records that result. This confirms feed state, not who made the change. See this feed's finding-clearance log.
Set wheelchair_boarding to 1 (accessible) or 2 (not accessible) for every stop. A field survey can start with the busiest stops. · Read the fix guide
Make the change. Make this change in whatever tool produces your feed, then re-export.
Check the result. The next scorecard run checks this finding again. If a comparable check no longer reports it, the feed's clearance log records that result. This confirms feed state, not who made the change. See this feed's finding-clearance log.
Set wheelchair_accessible on every trip. If every vehicle is accessible, this may be one default; otherwise use the value for each trip. · Read the fix guide
Make the change. Make this change in whatever tool produces your feed, then re-export.
Check the result. The next scorecard run checks this finding again. If a comparable check no longer reports it, the feed's clearance log records that result. This confirms feed state, not who made the change. See this feed's finding-clearance log.
Rider view: what this feed publishes
A quick read of rider-facing information in this feed.
- Schedule visibility
- The feed's last published service date is in 152 days.
- Published accessibility data
- Accessibility information is stated for 0% of stops and 0% of trips. This measures published data, not whether stops or vehicles are physically usable.
- Fare information
- No fare information is published in the feed.
- Realtime information
- Live-arrival data covered 100% of scheduled trips in the sampled window.
Important: This does not rate service reliability. Riders should confirm current service alerts, fares, and accessibility accommodations with the transit operator before traveling.
Send your vendor a fix request
You may not control the GTFS export yourself. Copy this and send it to whoever runs your scheduling software export. It names each fix with the validator notice and a guide link.
Score by category
The MobilityData validator flagged 4 kinds of issue across 277 instances (181 error, 58 warning, 38 informational).
Service data covers the next 152 days.
0% of stops state wheelchair accessibility (0% marked accessible, 0% marked not accessible). This measures what the feed publishes, not whether a stop is physically usable. Fare data is not published.
0% of stops state accessibility (0% marked accessible). Reflects what the feed states, not verified physical usability.
2 accessibility depth signals
8 route badge(s) pair a color and text color below the WCAG 4.5:1 contrast bar (1, 2, 3, 4, 6, and more).
Consider: Adjust route_color or route_text_color so each pair clears 4.5:1. Often switching the text between black and white is enough.
1 stop name(s) use abbreviations or symbols a screen reader may mispronounce, with no spoken form set ("St Siméon Schumann").
Consider: Add tts_stop_name with the spoken form, e.g. 'Main Street and Second Avenue', for the affected stops.
Opportunities to strengthen the data, not deductions from the sub-score above. States what the second accessibility lens can check from the feed, not verified physical usability.
Sampled 6 times: 2 of 2 configured feeds healthy; 100.0% of scheduled trips had live predictions; 100.0% of vehicles on their route; predictions ran a median of 0s behind schedule.
Routes and stops
Each route is drawn once, using the longest shape its trips follow; stops are the dots.
This feed has 43 stops.
The route and stop data is ready below. Load the map only when you want the geographic view. It uses additional data.
Basemap: OpenFreeMap, © OpenStreetMap contributors. Routes and stops: this agency's GTFS feed.
- 1 (red)
- 2 (teal)
- 3 (orange)
- 4 (green)
- 5 (teal)
- 6 (gray)
- 7 (gray)
- 8 (pink)
- 9 (pink)
- Gare-ESAT (green)
| Route | Type | Line color |
|---|---|---|
| 1 Gare - Centre Commercial | Bus | red |
| 2 Gare - Saint-Siméon | Bus | teal |
| 3 Gare - Saint Blaise | Bus | orange |
| 4 Gare - Orroire | Bus | green |
| 5 Gare - Centre Hospitalier - Inovia | Bus | teal |
| 6 Gare - Tarlefesse | Bus | gray |
| 7 Gare - Cité Scolaire | Bus | gray |
| 8 Gare - Tarlefesse - Moulin | Bus | pink |
| 9 Desserte Gare | Bus | pink |
| Gare-ESAT Navettes ESAT Gare Lib'bus | Bus | green |
List every stop
- Alsace Lorraine
- Beauséjour c.commercial
- Carnot
- Chevalet
- Chemin de Ronde
- Chauny
- Coizel
- Cité Scolaire
- Saint-Eloi
- ESAT
- Saint-Exupéry
- Charmolue - Saint-Martin
- Fbg Amiens - Paul Eluard
- Gare
- Goële Goelands
- Grimaldi
- Centre Hospitalier
- Campus Inovia
- Jean Bouin
- Jean Jaurés
- Kennedy
- Landrimont
- ESAT Léopold Bellan
- Pôle loisirs
- Moulin Saint-Blaise
- Moulin du Chatelain
- Mal Leclerc - Michelet
- Mony Paul Eluard
- Beauséjour J.Magnier
- Centre Commercial Maigremont
- Centre Commercial
- Orroire Ecole
- Orroire Hesdin
- Orroire Joncquoy
- Rue de Paris
- Place Saint-Jacques
- Goële Happlincourt
- Saint-Barthélémy Dumontois
- Saint-Blaise
- Orée du Bois
- St Siméon Schumann
- Tarlefesse
- Vauquelain
Over time
Overall score across the last 4 checks — up 8.2 since 2026-07-31.
Show the numbers
| Check | Score | Change |
|---|---|---|
| 2026-07-25 | 68.4 | first check |
| 2026-07-30 | 60.2 | down 8.2 |
| 2026-07-31 | 60.2 | no change |
| 2026-08-01 | 68.4 | up 8.2 |
What changed since your last check
- Correctness no change
- Freshness no change
- Rider experience no change
- Realtime quality up 41.2
What changed in this feed
Overall score rose 8.2 points since 2026-07-31.
Same feed file as 2026-07-31; the published zip did not change.
No longer reported since 2026-07-31 (1 finding)
- 2 of 2 trips scheduled during the sampling window had no live predictions. (scorecard_rt_trip_coverage)
This records the later feed state. It does not establish who made a change or why.
Subscribe to this feed’s changes (Atom) to hear about grade drops in a reader, with no sign-up.
What changed over time
On 2026-07-25 this feed started at grade D. On 2026-08-01 the check no longer reported: 2 of 2 trips scheduled during the sampling window had no live predictions. As of 2026-08-01 it holds grade D.
A plain-language history of this feed, newest first.
- 2026-08-01 Score rose 8 points, realtime rose 41 points.
- 2026-07-30 Score fell 8 points, realtime fell 41 points.
Everything we checked
9 findings, ordered by severity.
Show every finding
- Error181 instances
Trip distance exceeds shape distance (flagged by the MobilityData validator).
See the linked rule for what this affects.
Fix: Review the rule documentation for 'trip_distance_exceeds_shape_distance' at https://gtfs-validator.mobilitydata.org/rules.html and check the flagged rows in your feed. (Varies.)
Finding code: trip_distance_exceeds_shape_distance · See MobilityData GTFS Validator rules (opens the validator rules on an external site)
- Warning307 instances
307 of 307 trips don't say whether the vehicle is wheelchair accessible.
Even with accessible stops, riders need to know the bus itself can take them.
Fix: Set wheelchair_accessible on every trip. If every vehicle is accessible, this may be one default; otherwise use the value for each trip. (A default or per-trip field in your export.)
Finding code: scorecard_wheelchair_accessible_unknown · Read the fix guide · See GTFS Schedule reference (opens the GTFS Schedule reference on an external site)
- Warning57 instances
On some trips the stop distances run a little past the end of the route line.
The stop and shape distance values don't quite line up, so any math that uses them can drift.
Fix: Re-generate shape_dist_traveled on export so stop and shape distances use the same units. (Usually an export-tool fix, not hand editing.)
Finding code: trip_distance_exceeds_shape_distance_below_threshold · Read the fix guide · See MobilityData GTFS Validator rules (opens the validator rules on an external site)
- Warning43 instances
43 of 43 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 · See GTFS Schedule reference (opens the GTFS Schedule reference on an external site)
- Warning1 instance
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 · See MobilityData GTFS Validator rules (opens the validator rules on an external site)
- Warning1 instance
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 · See MobilityData GTFS Validator rules (opens the validator rules on an external site)
- Warning1 instance
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 · See GTFS Best Practices (opens GTFS Best Practices on an external site)
- Info38 instances
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 · See MobilityData GTFS Validator rules (opens the validator rules on an external site)
- Info1 instance
feed_info.txt has no technical contact (feed_contact_email or feed_contact_url).
Trip-planning apps and regional data coordinators have nobody to email when they spot a problem with your feed, so problems linger.
Fix: Add feed_contact_email to feed_info.txt. (One field.)
Finding code: scorecard_no_feed_contact · Read the fix guide · See MobilityData GTFS Validator rules (opens the validator rules on an external site)
Conformance mark Not yet
This feed is close to the conformance mark. 1 validator error to resolve. States wheelchair access on 0% of stops and 0% of trips; the mark needs 90% of each.
- Valid Not yet
- 1 validator error to resolve.
- Current Met
- Service data covers the next 152 days.
- Accessible Not yet
- States wheelchair access on 0% of stops and 0% of trips; the mark needs 90% of each.
In plain words: earn this mark when your feed passes validation, has not expired, and says whether nearly every stop and trip is wheelchair accessible.
A pass credential for a feed that is valid, current, and states wheelchair access on nearly every stop and trip. Accessibility here measures what the feed publishes, not whether a stop is physically usable. How the conformance mark works.
Realtime reliability
The realtime feed responded on 100.0% of 60 checks over the last 9 days, with 45s median lag.
Sampled on a schedule between full scores, so this tracks uptime and freshness over time rather than at a single moment.
Live predictions vs schedule
Arrival predictions ran right on the schedule, and stayed within 175s nine times in ten. They were on time (about a minute early to five late) 100.0% of the time. 100.0% of reported vehicle positions sat on or near the published route shape.
From the last full realtime sample: how far live arrival predictions sat from the schedule, and whether vehicle positions fell on the route. These feed the realtime score; they change no other category.
Clears the Google and Apple Maps four-week coverage bar. This feed has 152 days of service ahead, clearing the four-week (28-day) window Maps asks for. The feed also carries 181 validator errors, the other thing Maps checks at onboarding; the findings below name each fix.
How this agency maps to the standards
The scorecard is a data-quality lens, not a compliance determination. Its universal references describe good GTFS and useful rider information. Useful references here are GTFS Schedule Best Practices, GTFS-Realtime Best Practices, MobilityData grading scheme, Google Transit publication guidance. Read the full standards crosswalk.
- Correctness 63 / 100
- GTFS Schedule best practices, checked by the MobilityData validator. MobilityData grading covers stop locations, route names, and colors. Google Transit requires a feed to pass validation for publication.
- Freshness 85 / 100
- GTFS Schedule best practices call for a dataset that stays current. An expired calendar can remove service from Google Transit and other rider trip planners.
- Rider experience 37 / 100
- GTFS Best Practices for rider-facing fields. MobilityData grading covers stop names and headsigns.
- Realtime quality 100 / 100
- GTFS-Realtime best practices: a stable URL, high uptime, and frequent updates.
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