Feed status · checked 2026-09-13
Greater Portland Metro Bus
Based on the feed source on file; publisher ownership is not verified
Service mode Bus
unchanged since 2026-09-12
Catalogued in Maine.
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 30 hours ago; last changed 1 days ago.
Measured 4 of 4 score categories from the feed URL on file (publisher not verified).
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 9 snapshots.
- The feed was downloaded from the configured feed URL. Publisher ownership of that URL is not verified.
Confidence describes how much the pipeline could measure this run, not the feed itself. It never changes the grade.
Top things to fix
Check the trip updates endpoint with your AVL vendor; it should return a fresh GTFS-Realtime protobuf on every request.
The trip updates realtime feed failed during sampling. When this feed is down, riders see scheduled times presented as if they were live.
⏱ Usually a vendor support ticket.worth about +13 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
1368 of 1368 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
2741 of 2741 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
- The trip updates realtime feed failed during sampling.
- Next action
- Check the trip updates endpoint with your AVL vendor; it should return a fresh GTFS-Realtime protobuf on every request.
- 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
- 1368 of 1368 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
- 2741 of 2741 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.
Check the trip updates endpoint with your AVL vendor; it should return a fresh GTFS-Realtime protobuf on every request. · Read the fix guide for scorecard_rt_trip_updates_unreachable
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 for scorecard_wheelchair_boarding_unknown
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 for scorecard_wheelchair_accessible_unknown
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 30 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
- One or more realtime feeds were reachable; live-arrival coverage is not known.
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 6 kinds of issue across 2384 instances (0 error, 2383 warning, 1 informational).
Service data covers the next 30 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.
3 accessibility depth signals
2 route badge(s) pair a color and text color below the WCAG 4.5:1 contrast bar (5, 7).
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.
1284 stop name(s) use abbreviations or symbols a screen reader may mispronounce, with no spoken form set ("Danforth St + High St", "Danforth St + State St", "Spring St + State St", and more).
Consider: Add tts_stop_name with the spoken form, e.g. 'Main Street and Second Avenue', for the affected stops.
This feed models stations or entrances but has no pathways.txt and levels.txt.
Consider: Add pathways.txt connecting entrances, platforms, and elevators, and levels.txt for each floor, so the step-free route is described.
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 9 times: 2 of 3 configured feeds healthy; 100.0% of vehicles on their route.
Routes and stops
Each route is drawn once, using the longest shape its trips follow; stops are the dots.
This feed has 1368 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 (teal)
- 2 (yellow)
- 21 (green)
- 24A (pink)
- 24B (orange)
- 3 (white)
- 4 (gray)
- 5 (green)
- 7 (red)
- 8 (pink)
- 9A (orange)
- 9B (green)
- BRZ (teal)
- HSK (teal)
| Route | Type | Line color |
|---|---|---|
| 1 Congress Street | Bus | teal |
| 2 Forest Avenue - Riverton | Bus | yellow |
| 21 SMCC - Downtown Portland | Bus | green |
| 24A Maine Mall - Main Street | Bus | pink |
| 24B Maine Mall via Broadway | Bus | orange |
| 3 Westbrook Crosstown | Bus | white |
| 4 Westbrook - Brighton Ave | Bus | gray |
| 5 Maine Mall - Park Avenue | Bus | green |
| 7 Falmouth - Downtown Portland - Jetport | Bus | red |
| 8 Peninsula Loop | Bus | pink |
| 9A North Deering via Stevens Avenue | Bus | orange |
| 9B North Deering via Washington Avenue | Bus | green |
| BRZ Portland - Yarmouth - Freeport - Brunswick | Bus | teal |
| HSK Portland - Westbrook - Gorham | Bus | teal |
List every stop
- Myrtle St + Brown St
- Broadway + Linton
- 425 Broadway
- Anthoine St + Hamilton St
- Anthoine St + Osborne Ave
- Anthoine St + Broadway
- Anthoine St + Columbus Ave
- Anthoine St + Hamilton St
- Benjaman Pickett St + Adams St
- Broadway + Benjaman Pickett St
- Franklin St + Fore St NB
- Broadway + Broadway
- Broadway + 1337 Broadway
- Broadway + Burnham St
- Broadway + Burnham
- Broadway + Elm St
- Broadway + Elm St
- Broadway + Evans St
- Broadway + Amato's
- Broadway + Fellows St
- Franklin St + Fore St SB
- Broadway + Lincoln St
- Broadway + Mussey St
- Broadway + N Kelsey St
- Broadway + Kenneth St
- Broadway + Orlando St
- Broadway + Preble St
- Broadway + Prides St
- Broadway + Scamman St
- Broadway + So Kelsey St
- Brown St + Walker St
- Broadway + Strout St
- Broadway + 740 Broadway
- Broadway + Christian School
- Broadway + Kenneth St
- Broadway + Linton St
- BDWAY & Mahoney
- Broadway + 747 Broadway
- Broadway + Anthoine
- Broadway + Anthoine St
- Broadway + Clemons St
- Brown St + Walker St
- Broadway + Kelly St
- Broadway + Kelley St
- Broadway + Lincoln St
- Broadway + Stanford St
- Broadway + Fellows St
- Broadway + Prides St
- Broadway + Strout St
- Broadway + Cash Corner
- Broadway + Cash Corner
- Main St + Cash Corner
- Main St + Cash Corner
- Evans St + Community Center
- Congress St + Forest Ave
- Cottage Rd + Soule St
- Cottage Rd + Homestead Ave
- Evans St + Bonnybrier Rd
- Evans St + Bonnybrier Rd
- Evans St + Cumberland Rd
- Evans St + Cumberland Rd
- Evans St + Highland Ave
- EVANS & C.Ctr
- Foden Rd + Darling Ave
- Foden Rd + Western Ave
- 1001 Gallery Blvd
- Gallery Blvd + Lowe's
- GALLERY &Walmart
- Gannett Dr
- 295 Gannett Dr
- 207 Gannett Dr
- 119 Gannett Dr
- Philbrook Ave + Hannaford
- High St + Spring St
- HIGHLAND &School
- HIGHLAND &School
- Highland Ave + T-Ledge Dr
- Highland Ave + Nazarine Church
- Highland Ave + T-Ledge Condos
- Kaler Rd + Spurwink Ave
- Lincoln St + Chapman St
- Lincoln St + Bodge St SB
- Lincoln St + Church St
- Lincoln St + Bodge St NB
- CASCO BAY LINES
- Lincoln + 390 Lincoln St
- Lincoln St + Chapman St
- Main St + Cox St
- Main St + Skillings St
- Main St + Froswick Ave
- Main + Wilson
- Main St + Mardale Ave
- Allen Ave + 50 Allen Ave
- Main St + Mardale Ave
- Main St + Thirlmere Ave
- Main St + Mclean St
- Main St + Alton St
- Main + Ridgeland Ave
- Main + Skillings
- Main St + Ridgeland Ave
- Hancock St + Thames St
- Maine Mall Rd + Macys
- Maine Mall JC Penney
- Maine Mall Rd + Ihop
- Maine Mall Rd + Goodwill
- Thomas St + Millcreek Hub
- Congress St + Center St
- Ocean St + Parrot St
- Commercial St + India St
- Ocean St + Derby Rd
- Ocean St + Sawyer St
- Ocean St + Simmons St
- Congress St + Franklin St
- Ocean St + Stanley St
- Congress St + Elm St
- Philbrook Ave + Hampton Inn
- Pillsbury St + Cottage Rd
- Pillsbury + Lowell
- Preble St + Fort Rd
- Preble St + Franklin Ter
- Preble St + Stanford St
- Garage
- Preble St + Preble St Ext
- Preble St + High St
- Westbrook St + Redbank
- RUNNING HILL&82
- Runninghill Rd + Target
- Runninghill Rd + Sable Oaks Dr
- Sawyer + Broadway
- Sawyer + Ferry Village
- Sawyer St + Marsh Rd
- Sawyer + Mosher St
- Congress St + Bramhall St
- Sawyer St + Cormier Rd
- Sawyer + Sterling
- Sawyer + Front St
- Sawyer St + Mitchell Rd
- Fort Rd + SMCC
- Spring St + Payne Rd
- Spring St + 55 Spring St
- Spring St + 25 Spring St
- Temple St + Fore St
- Temple St + Free St
- E St + Waterman Dr
- Waterman Dr + E St
- Westbrook St + Westcott Rd
- Westbrook St + Lower Coach Rd
- Westbrook St + Upper Coach Rd
- Congress St + 1577 Congress St
- Westbrook St + Westcott Rd
- Westbrook St + Landry Village
- WESTBROOK&BETH
- Westbrook St + Lower Coach Rd
- Westbrook St + Upper Coach Rd
- Western Ave + Long Creek Drive
- WESTERN & CREEK
- Western Ave + 371 Western Ave
- Western Ave + Long Creek Dr
- Congress St + Casco St
- Western Ave + Foden Rd
- Preble St + Willard Square
- York St + Pleasant St
- York St + State St
- Brickhill Ave + Brickhill
- Brickhill Ave + Heron Cove Dr
- Brickhill Ave + Townhouse Dr
- Anthoine + 36 Anthoine
- Highland + MSW Facility Rd
- Highland + Crestview
- Highland + Alfred St
- Highland + Winterberry St
- HIGHLAND&WHISPE
- Highland + Whispering Pines
- HIGHLAND & OPP
- P.S. Facility TP
- Allen Ave + 97 Allen Ave
- Ocean + D St
- Ocean + D St
- Ocean + A St
- Ocean + A St
- Waterman + B St
- Waterman + B St
- Waterman + E St
- Portland City Hall
- Congress St + Deering Ave
- Congress St + Walker St
- Congress St + Mitton St
- Allen Ave + Abbott St
- Portland Public Library
- Congress St + Forest Ave
- Congress + Union Station Plaza
- Congress St + Frederic St
- Congress St + Frost St
- Congress St + Garrison St
- Congress St + Garrison St
- Auburn St + 92 Auburn St
- Congress St + Maine Med
- Congress St + Hampshire St
- Congress St + Hobart St
- Congress St + Hobart St
- Congress St + Hutchins Dr
- CONGRESS & INDIA
- Congress St + Smith St
- Allen Ave + 320 Allen Ave
- Congress St + 1945 Congress St
- Congress St + Exchange St
- Congress St + 1189 Congress St
- Auburn St + Bartley St
- Congress St + Mellen St
- Congress St + 206 Congress St
- Jackson St + Kenneth St
- Congress St + Park St
- Congress St + Park St
- Auburn St + 206 Auburn St
- Congress St + Sheridan St
- Congress St + Forest St/MMC
- Congress St + 690 Congress St
- Congress St + State St
- Congress St + Boody St
- Congress St + Unum West
- Congress St + 1717 Congress St
- Casco Bay High School O/B
- Congress St + Washington Ave
- Congress St + Waldo St
- Congress St + 1412 Congress St
- Congress St + Weymouth St
- Congress St + Weymouth St
- Congress St + Whitney Ave
- Congress St + Sewall St
- Summit St + 276 Summit St
- Summit St + Alpine St
- Auburn St + Hillside St
- CUMBERLAND& 255
- Cumberland Ave + Elm St
- Casco Bay High School I/B
- Harbor Terrace
- Danforth St + High St
- Danforth St + School St
- Danforth St + State St
- Bridgton Rd + East Bridge St
- East Bridge St + Carlson St
- EAST BR&CONSTIT
- Auburn St + Jackson St
- EAST BR&INDEPEN
- CONGRESS&EMERSON
- Eastern Promenade + Wilson St
- Eastern Promenade + Turner St
- Eastern Promenade + Vesper St
- Eastern Promenade + Walnut St
- Auburn St + Jackson St
- and 1118 more (see the full list on the map or in the GeoJSON)
Over time
Overall score across the last 6 checks — unchanged since 2026-09-12.
Show the numbers
| Check | Score | Change |
|---|---|---|
| 2026-08-06 | 56.0 | first check |
| 2026-08-07 | 55.7 | down 0.3 |
| 2026-08-10 | 56.0 | up 0.3 |
| 2026-09-01 | 59.2 | up 3.2 |
| 2026-09-12 | 57.8 | down 1.4 |
| 2026-09-13 | 57.8 | no change |
What changed since your last check
- Correctness no change
- Freshness no change
- Rider experience no change
- Realtime quality no change
What changed over time
On 2026-08-06 this feed started at grade F. On 2026-09-13 the check no longer reported: service data runs out in 29 day(s). As of 2026-09-13 it holds grade F.
A plain-language history of this feed, newest first.
- 2026-09-01 Score rose 3 points, rider experience rose 13 points.
Everything we checked
15 findings, ordered by severity.
Show every finding
- Error1 instance
The trip updates realtime feed failed during sampling.
When this feed is down, riders see scheduled times presented as if they were live.
Fix: Check the trip updates endpoint with your AVL vendor; it should return a fresh GTFS-Realtime protobuf on every request. (Usually a vendor support ticket.)
Finding code: scorecard_rt_trip_updates_unreachable · Read the fix guide for scorecard_rt_trip_updates_unreachable · See GTFS-Realtime reference (opens the GTFS-Realtime reference on an external site)
- Warning2741 instances
2741 of 2741 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 for scorecard_wheelchair_accessible_unknown · See GTFS Schedule reference (opens the GTFS Schedule reference on an external site)
- Warning2189 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.)
Finding code: mixed_case_recommended_field · Read the fix guide for mixed_case_recommended_field · See MobilityData GTFS Validator rules (opens the validator rules on an external site)
- Warning1368 instances
1368 of 1368 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 for scorecard_wheelchair_boarding_unknown · See GTFS Schedule reference (opens the GTFS Schedule reference on an external site)
- Warning582 instances
582 of 2741 trips have no headsign, the text that tells riders where the bus is going.
When a route has multiple directions or patterns, the route name alone may not tell riders which service is coming.
Fix: Add the destination, direction, or 'via' label riders actually see to trip_headsign. Do not copy the route name. If the label changes during the trip, use stop_headsign. (Usually one value per route pattern in your scheduling source.)
Finding code: scorecard_missing_headsigns · Read the fix guide for scorecard_missing_headsigns · See GTFS Best Practices (opens GTFS Best Practices on an external site)
- Warning191 instances
Equal shape distance diff coordinates distance below threshold (flagged by the MobilityData validator).
See the linked rule for what this affects.
Fix: Review the rule documentation for 'equal_shape_distance_diff_coordinates_distance_below_threshold' at https://gtfs-validator.mobilitydata.org/rules.html and check the flagged rows in your feed. (Varies.)
Finding code: equal_shape_distance_diff_coordinates_distance_below_threshold · See MobilityData GTFS Validator rules (opens the validator rules 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 for missing_recommended_file · See MobilityData GTFS Validator rules (opens the validator rules on an external site)
- Warning1 instance
Some stops exist in the feed but no trip ever stops at them.
Riders may walk to a stop where no bus is scheduled to arrive.
Fix: Remove retired stops from the export, or add them back to the trips that should serve them. (A review pass in your scheduling software.)
Finding code: stop_without_stop_time · Read the fix guide for stop_without_stop_time · See MobilityData GTFS Validator rules (opens the validator rules on an external site)
- Warning1 instance
Many of the feed's trips don't run at all in the next 7 days.
It usually means old service periods are still in the export, making the feed bigger and harder to check.
Fix: Trim past service periods the next time you export. (One setting in most export tools.)
Finding code: trip_coverage_not_active_for_next7_days · Read the fix guide for trip_coverage_not_active_for_next7_days · 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 for scorecard_missing_feed_info_dates · 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 for scorecard_no_fare_data · See GTFS Best Practices (opens GTFS Best Practices on an external site)
- Warning1 instance
This feed models stations or entrances but has no pathways.txt.
Trip planners can't guide riders through the station, and there is no step-free route information for wheelchair users.
Fix: Add pathways.txt to link entrances, platforms, and elevators. Give each one a level. (Worth it for multi-level or large stations; flat stops don't need it.)
Finding code: scorecard_station_no_pathways · Read the fix guide for scorecard_station_no_pathways · See GTFS Schedule reference (opens the GTFS Schedule reference on an external site)
- Info102 instances
About 102 stop names are written in ALL CAPS.
Mixed-case names are easier to read in apps and are read more naturally by screen readers.
Fix: Rename stops to mixed case where the language has letter case (for example, 'Central Station'). (Often a bulk fix in your scheduling software.)
Finding code: scorecard_stop_names_all_caps · Read the fix guide for scorecard_stop_names_all_caps · See GTFS Best Practices (opens GTFS Best Practices on an external site)
- Info1 instance
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.)
Finding code: unknown_column · Read the fix guide for unknown_column · 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).
App makers and state data programs have nobody to email when they spot a problem. Small errors then sit in the feed for months.
Fix: Add feed_contact_email to feed_info.txt. (One field.)
Finding code: scorecard_no_feed_contact · Read the fix guide for scorecard_no_feed_contact · See MobilityData GTFS Validator rules (opens the validator rules on an external site)
NTD GTFS readiness Needs attention
This feed is close to NTD-ready. Service data runs out in 30 days; renew before you certify.
- Published Ready
- Published at a public URL.
- Valid Ready
- Passes validation with no errors.
- Current Needs attention
- Service data runs out in 30 days; renew before you certify.
- agency_id provided Ready
- agency.txt provides agency_id. For RY2026, keep one stable value for each NTD reporter represented in the feed and crosswalk each value on the P-50 form.
- agency_id equals your NTD ID (optional) Not checked yet
- This feed provides agency_id. For RY2026, keep one stable value for each NTD reporter represented in the feed and crosswalk it on the P-50 form. The value does not need to equal the five-digit NTD ID; we do not have that ID on file, so the optional equality comparison is not checked yet.
- shapes.txt covers your trips Ready
- All 2741 trips have a shape in shapes.txt.
In plain words: if you report to the federal transit database, you have to publish a working, up-to-date feed, provide a stable agency_id for each represented reporter, and confirm the feed and P-50 crosswalk each year. This box is a heads-up; your filings are the official check.
A readiness signal mapping this feed to the FTA National Transit Database GTFS requirement (Report Year 2023 onward: a public, valid, current feed, certified annually on the D-10). For RY2026, each represented reporter needs a stable agency_id, unique within the feed and crosswalked to its five-digit NTD ID on P-50; the values do not need to be equal. FTA also requires shapes.txt in the published GTFS: Full Reporters from Report Year 2025, and Reduced, Rural, and Tribal Reporters from Report Year 2026. Not an official determination; your certification is the official check.
Conformance mark Not yet
Two requirements remain for this feed to earn the conformance mark. Service data runs out in 30 days; renew to qualify. 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 Not yet
- Service data runs out in 30 days; renew to qualify.
- 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.
Can riders use it?
Checks beyond structural validation: places where the feed is valid but a rider still could not travel.
- 1 of 684 boardable stops are never served by any trip. Riders see these stops in apps and on the map but can never catch anything there, which erodes trust in the data. Remove stops no route serves, or add the trips that should call at them.
These do not change the grade. They catch trips with no rideable leg and stops no trip serves, the kind of gap a trip planner trips over.
Realtime reliability
The realtime feed responded on 100.0% of 200 checks in the 31 days to 2026-09-15, with 3s median lag.
Sampled on a schedule between full scores, so this tracks uptime and freshness over time rather than at a single moment. The window ends at the newest observation, which is not always today: if the monitor stops, this window stops with it.
Live predictions vs schedule
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 28 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, FTA National Transit Database GTFS requirement. Read the full standards crosswalk.
- Correctness 72 / 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. FTA NTD readiness also checks that the published feed is valid.
- Freshness 35 / 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. FTA NTD readiness also checks that the published feed is current.
- Rider experience 33 / 100
- GTFS Best Practices for rider-facing fields. MobilityData grading covers stop names and headsigns.
- Realtime quality 87 / 100
- GTFS-Realtime best practices: a stable URL, high uptime, and frequent updates.
Part of the Maine portfolio: the same scorecards for every feed we track in that group, on one free page.
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/greater-portland-metro-bus-2642/2026-09-13.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 2026-09-13. 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.
Citing the tool itself rather than one agency's record? Use the repo's CITATION.cff.