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Feed status · checked 2026-07-19

Yotsukaido City Loop Bus Yoppii (四街道市内循環バス「ヨッピィ」)

Based on the feed this agency publishes

Service mode Bus

74.2 / 100

unchanged since 2026-07-18

Catalogued in Chiba, Japan.

Covers 255 daysAccessibility gapsRealtime not yet published

Yotsukaido City's Yoppii city loop bus (市内循環バス「ヨッピィ」); a second Chiba feed record distinct from Kimitsu City.

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 v1.2, validator 8.0.1.

Measured 3 of 4 score categories from the agency's own feed.

How we measured this

Confidence in this measurement: medium.

  • Realtime quality was not measured this run. It does not count against the grade.
  • 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

Fix 01

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

62 of 62 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

Fix 02

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

40 of 40 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

Fix 03

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.

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.

⏱ A planned ID change, not a quick text cleanup.worth about +8 points in its category

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.

  1. 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. Self-check a feed before you publish.

  2. 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. Self-check a feed before you publish.

  3. 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.

    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. Self-check a feed before you publish.

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 255 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
Fare information is published using GTFS Fares v1.
Realtime information
Realtime-feed availability and live-arrival coverage are not known from this scorecard.

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

Correctness75.0 / 100

The MobilityData validator flagged 7 kinds of issue across 1456 instances (0 error, 1453 warning, 3 informational).

Freshness100.0 / 100

Service data covers the next 255 days.

Rider experience52.5 / 100

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 published.

Accessibility0 / 100

0% of stops state accessibility (0% marked accessible). Reflects what the feed states, not verified physical usability.

FaresLegacy fares

Fares are applied to trips.

Realtime qualityNot yet measured

Not scored yet. Nothing here counts against the grade.

Routes and stops

Each route is drawn once, using the longest shape its trips follow; stops are the dots.

Skip to route and stop data

Basemap: OpenFreeMap, © OpenStreetMap contributors. Routes and stops: this agency's GTFS feed.

  • 市内循環バス「ヨッピィ」 (white)
  • 市内循環バス「ヨッピィ」 (white)
Routes in Yotsukaido City Loop Bus Yoppii (四街道市内循環バス「ヨッピィ」)'s feed
RouteTypeLine color
市内循環バス「ヨッピィ」Buswhite
市内循環バス「ヨッピィ」Buswhite

This feed has 62 stops.

List every stop
  • 鹿放ケ丘
  • 鹿放ケ丘
  • 鹿放ケ丘遠近
  • 鹿放ケ丘遠近
  • 鹿放ケ丘西
  • 鹿放ケ丘西
  • 農協入口
  • 農協入口
  • 農協入口
  • 鹿放橋南
  • 鹿放橋南
  • 鹿放橋北
  • 鹿放橋北
  • 大作岡公民館
  • ふれあいセンター
  • ふれあいセンター
  • 鹿放ケ丘中央
  • 鹿放ケ丘中央
  • いちご園
  • いちご園
  • 四街道市役所
  • 大日保育園
  • 大日保育園
  • 桜ケ丘北
  • 桜ケ丘北
  • 桜ケ丘南
  • 桜ケ丘南
  • 新生
  • 新生
  • 西中入口
  • 西中入口
  • 下志津新田入口
  • 下志津新田入口
  • 四街道公民館
  • 四街道公民館
  • 学園前
  • 学園前
  • 大日小学校
  • 今宿南
  • イトーヨーカ堂前
  • イトーヨーカ堂前
  • 今宿中央
  • 今宿北
  • 富士見ケ丘会館
  • 四街道老人ホーム前
  • 富士見ケ丘中央
  • 富士見ケ丘南
  • 大作岡
  • 鹿放ケ丘北
  • 第二庁舎
  • 第二庁舎
  • 四街道駅
  • 消防署前
  • 消防署前
  • 緑ケ丘
  • 緑ケ丘
  • 大日緑ケ丘
  • 大日緑ケ丘
  • 桜ケ丘
  • 桜ケ丘
  • 幼稚園前
  • 幼稚園前

Over time

Overall score across the last 2 checks — unchanged since 2026-07-18.

2026-07-18: 74.22026-07-19: 74.2
Show the numbers
CheckScoreChange
2026-07-1874.2 first check
2026-07-1974.2 no change

What changed since your last check

  • Correctness no change
  • Freshness no change
  • Rider experience no change

What changed in this feed

Overall grade and score held steady since 2026-07-18.

Same feed file as 2026-07-18; the published zip did not change.

Subscribe to this feed’s changes (Atom) to hear about grade drops in a reader, with no sign-up.

Everything we checked

10 findings, ordered by severity.

Show every finding
  • Warning1448 instances

    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.)

    Validator rule: non_ascii_or_non_printable_char · See MobilityData GTFS Validator rules

  • Warning62 instances

    62 of 62 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.)

    Validator rule: scorecard_wheelchair_boarding_unknown · Read the fix guide · See GTFS Schedule reference

  • Warning40 instances

    40 of 40 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.)

    Validator rule: scorecard_wheelchair_accessible_unknown · Read the fix guide · See GTFS Schedule reference

  • Warning2 instances

    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.)

    Validator rule: mixed_case_recommended_field · Read the fix guide · See MobilityData GTFS Validator rules

  • Warning1 instance

    Two or more routes share the same name.

    Riders can't tell the routes apart in apps.

    Fix: Give each route a distinct short or long name. (One field per route.)

    Validator rule: duplicate_route_name · See MobilityData GTFS Validator rules

  • Warning1 instance

    feed_info.txt lists no contact email and no contact URL.

    Without a contact, apps like Google Maps can't reach you when they find a problem in the feed.

    Fix: Add feed_contact_email or feed_contact_url to feed_info.txt. (One field, set once in export settings.)

    Validator rule: missing_feed_contact_email_and_url · Read the fix guide · See MobilityData GTFS Validator rules

  • Warning1 instance

    Some files leave out fields that GTFS asks for but does not require.

    Recommended fields like agency_phone or stop descriptions make the feed more useful to riders and trip planners.

    Fix: Review the flagged fields and fill in the ones your riders would use. (A field at a time; not urgent.)

    Validator rule: missing_recommended_field · Read the fix guide · See MobilityData GTFS Validator rules

  • Info2 instances

    Some files contain columns that are not part of the GTFS spec.

    Harmless to riders, but apps ignore these columns and they can hide typos in real column names.

    Fix: Check the flagged column names for misspellings of standard GTFS fields; remove them if they are vendor extras. (A quick look at the flagged files.)

    Validator rule: unknown_column · Read the fix guide · See MobilityData GTFS Validator rules

  • Info1 instance

    Platform without parent station (flagged by the MobilityData validator).

    See the linked rule for what this affects.

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

    Validator rule: platform_without_parent_station · See MobilityData GTFS Validator rules

  • 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.)

    Validator rule: scorecard_no_feed_contact · Read the fix guide · See MobilityData GTFS Validator rules

Conformance mark Not yet

This feed is close to the conformance mark. States wheelchair access on 0% of stops and 0% of trips; the mark needs 90% of each.

Valid Met
Passes validation with no errors.
Current Met
Service data covers the next 255 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.

Clears the Google and Apple Maps four-week coverage bar. This feed has 255 days of service ahead, clearing the four-week (28-day) window Maps asks for. No validator errors either, so riders keep seeing this agency in their trip planners; warnings lower the grade here but do not remove a feed from Maps.

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 75 / 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 100 / 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 52 / 100
GTFS Best Practices for rider-facing fields. MobilityData grading covers stop names and headsigns.
Realtime quality Not yet published
GTFS-Realtime best practices: a stable URL, high uptime, and frequent updates.

Show your grade

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Yotsukaido City Loop Bus Yoppii (四街道市内循環バス「ヨッピィ」) GTFS data quality grade: C

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Cite this record

This page updates on every check. The record below does not: it is the dated file this grade came from, published at https://gtfsscorecard.org/data/artifacts/yotsukaido-city-yoppii/2026-07-19.json and never overwritten, pinning the grade, category scores, rubric version, validator version, reader archive profile, and the scored feed's sha256 as they stood on 2026-07-19. Use it in a board packet, a regulatory filing, or a research citation instead of linking the live page, whose content will differ on your next visit.

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