FTA's GTFS link list now covers 1,207 agencies, organized by NTD ID. That join key connects feed discovery to federal transit reporting.
https://its-feed.com/articles/roundup-2026-11/
#GTFS #TransitData
https://its-feed.com/articles/roundup-2026-11/
#GTFS #TransitData
November 6, 2026 at 8:48 PM
FTA's GTFS link list now covers 1,207 agencies, organized by NTD ID. That join key connects feed discovery to federal transit reporting.
https://its-feed.com/articles/roundup-2026-11/
#GTFS #TransitData
https://its-feed.com/articles/roundup-2026-11/
#GTFS #TransitData
With 24 characters per line, MBTA countdown signs cannot just repeat an alert headline. They build closure messages from effect codes and affected stations.
https://its-feed.com/articles/passenger-information-systems/
#TransitData #PublicTransit
https://its-feed.com/articles/passenger-information-systems/
#TransitData #PublicTransit
October 30, 2026 at 2:48 PM
With 24 characters per line, MBTA countdown signs cannot just repeat an alert headline. They build closure messages from effect codes and affected stations.
https://its-feed.com/articles/passenger-information-systems/
#TransitData #PublicTransit
https://its-feed.com/articles/passenger-information-systems/
#TransitData #PublicTransit
Feed freshness depends on the cadence you declare. In this short video, Veodyn labels GTFS feeds fresh, stale, or down and names the datasets they feed.
https://youtu.be/g6vqRF_lgas
#GTFS #TransitData
https://youtu.be/g6vqRF_lgas
#GTFS #TransitData
October 20, 2026 at 1:48 PM
Feed freshness depends on the cadence you declare. In this short video, Veodyn labels GTFS feeds fresh, stale, or down and names the datasets they feed.
https://youtu.be/g6vqRF_lgas
#GTFS #TransitData
https://youtu.be/g6vqRF_lgas
#GTFS #TransitData
The NTD records only nine transit cyberattacks since 2014, though FTA says dozens likely occurred. A physical-assets reading of “infrastructure” helped screen digital incidents out.
https://its-feed.com/articles/ntd-cybersecurity-reporting/
#TransitData #Cybersecurity
https://its-feed.com/articles/ntd-cybersecurity-reporting/
#TransitData #Cybersecurity
October 16, 2026 at 2:47 PM
The NTD records only nine transit cyberattacks since 2014, though FTA says dozens likely occurred. A physical-assets reading of “infrastructure” helped screen digital incidents out.
https://its-feed.com/articles/ntd-cybersecurity-reporting/
#TransitData #Cybersecurity
https://its-feed.com/articles/ntd-cybersecurity-reporting/
#TransitData #Cybersecurity
GTFS ownership has moved to MobilityData on paper, while the repository and contributor agreement still point to Google. Also this month: shapes.txt is now conditionally required.
https://its-feed.com/articles/roundup-2026-10/
#GTFS #TransitData
https://its-feed.com/articles/roundup-2026-10/
#GTFS #TransitData
October 2, 2026 at 2:48 PM
GTFS ownership has moved to MobilityData on paper, while the repository and contributor agreement still point to Google. Also this month: shapes.txt is now conditionally required.
https://its-feed.com/articles/roundup-2026-10/
#GTFS #TransitData
https://its-feed.com/articles/roundup-2026-10/
#GTFS #TransitData
A zero exit status from the canonical GTFS validator means it produced a report, not that the feed is clean. Compliance requires checking report.json for ERROR notices.
https://its-feed.com/articles/what-the-gtfs-validator-checks/
#GTFS #TransitData
https://its-feed.com/articles/what-the-gtfs-validator-checks/
#GTFS #TransitData
September 29, 2026 at 2:47 PM
A zero exit status from the canonical GTFS validator means it produced a report, not that the feed is clean. Compliance requires checking report.json for ERROR notices.
https://its-feed.com/articles/what-the-gtfs-validator-checks/
#GTFS #TransitData
https://its-feed.com/articles/what-the-gtfs-validator-checks/
#GTFS #TransitData
Not all transit data updates at the same speed. ⏱️
From security waits to ground stops, school bus data and ER waits each source follows its own refresh cycle.
#TransitBarometer #TransitData #LiveData #DataUpdates #Transportation #AirportData #TravelData #SecurityWaits
From security waits to ground stops, school bus data and ER waits each source follows its own refresh cycle.
#TransitBarometer #TransitData #LiveData #DataUpdates #Transportation #AirportData #TravelData #SecurityWaits
September 28, 2026 at 2:19 AM
Not all transit data updates at the same speed. ⏱️
From security waits to ground stops, school bus data and ER waits each source follows its own refresh cycle.
#TransitBarometer #TransitData #LiveData #DataUpdates #Transportation #AirportData #TravelData #SecurityWaits
From security waits to ground stops, school bus data and ER waits each source follows its own refresh cycle.
#TransitBarometer #TransitData #LiveData #DataUpdates #Transportation #AirportData #TravelData #SecurityWaits
AVL locates the vehicle; CAD compares that position with the schedule and gives dispatchers something to act on. In 61 bus feeds surveyed, position and vehicle ID appeared in every feed.
https://its-feed.com/articles/what-a-cad-avl-system-does/
#TransitData #CADAVL
https://its-feed.com/articles/what-a-cad-avl-system-does/
#TransitData #CADAVL
September 18, 2026 at 7:47 PM
AVL locates the vehicle; CAD compares that position with the schedule and gives dispatchers something to act on. In 61 bus feeds surveyed, position and vehicle ID appeared in every feed.
https://its-feed.com/articles/what-a-cad-avl-system-does/
#TransitData #CADAVL
https://its-feed.com/articles/what-a-cad-avl-system-does/
#TransitData #CADAVL
Average wait and average when delayed tell two very different stories.
Read the methodology: transitbarometer.com/methodology/
#TransitBarometer #TransitData #WaitTimes #AverageWait #BorderWaitTimes #TravelData #TransportationData #DataJournalism #DataAnalytics #DataInsights #DataVisualization
Read the methodology: transitbarometer.com/methodology/
#TransitBarometer #TransitData #WaitTimes #AverageWait #BorderWaitTimes #TravelData #TransportationData #DataJournalism #DataAnalytics #DataInsights #DataVisualization
September 12, 2026 at 3:45 AM
Average wait and average when delayed tell two very different stories.
Read the methodology: transitbarometer.com/methodology/
#TransitBarometer #TransitData #WaitTimes #AverageWait #BorderWaitTimes #TravelData #TransportationData #DataJournalism #DataAnalytics #DataInsights #DataVisualization
Read the methodology: transitbarometer.com/methodology/
#TransitBarometer #TransitData #WaitTimes #AverageWait #BorderWaitTimes #TravelData #TransportationData #DataJournalism #DataAnalytics #DataInsights #DataVisualization
TODS adds what rider-facing GTFS leaves out: pull-outs, deadheads, crew runs, and vehicle assignments. Its ten optional files offer a standard handoff from scheduling systems to CAD/AVL.
https://its-feed.com/articles/transit-operational-data-standard/
#TransitData #OpenStandards
https://its-feed.com/articles/transit-operational-data-standard/
#TransitData #OpenStandards
September 11, 2026 at 7:47 PM
TODS adds what rider-facing GTFS leaves out: pull-outs, deadheads, crew runs, and vehicle assignments. Its ten optional files offer a standard handoff from scheduling systems to CAD/AVL.
https://its-feed.com/articles/transit-operational-data-standard/
#TransitData #OpenStandards
https://its-feed.com/articles/transit-operational-data-standard/
#TransitData #OpenStandards
GTFS-Realtime shows where a bus is now; TIDES preserves the service-day record. Its 11 tables link AVL, passenger counts, and fare transactions to scheduled and performed trips.
https://its-feed.com/articles/tides-transit-data-specification/
#TransitData #OpenStandards
https://its-feed.com/articles/tides-transit-data-specification/
#TransitData #OpenStandards
September 11, 2026 at 2:47 PM
GTFS-Realtime shows where a bus is now; TIDES preserves the service-day record. Its 11 tables link AVL, passenger counts, and fare transactions to scheduled and performed trips.
https://its-feed.com/articles/tides-transit-data-specification/
#TransitData #OpenStandards
https://its-feed.com/articles/tides-transit-data-specification/
#TransitData #OpenStandards
Declaring GTFS transfer_type 2 now requires min_transfer_time, turning a consumer-enforced assumption into a rule agencies can validate. GTFS-Realtime alert images also shed their experimental label.
https://its-feed.com/articles/roundup-2026-09/
#GTFS #TransitData
https://its-feed.com/articles/roundup-2026-09/
#GTFS #TransitData
September 4, 2026 at 2:48 PM
Declaring GTFS transfer_type 2 now requires min_transfer_time, turning a consumer-enforced assumption into a rule agencies can validate. GTFS-Realtime alert images also shed their experimental label.
https://its-feed.com/articles/roundup-2026-09/
#GTFS #TransitData
https://its-feed.com/articles/roundup-2026-09/
#GTFS #TransitData
Agencies contributing stops to OpenStreetMap should start with identifiers, not replacement geometry. Of 9,998 US bike-share stations checked, 6,222 were already mapped within 80 feet.
https://its-feed.com/articles/transit-data-in-openstreetmap/
#OpenStreetMap #TransitData
https://its-feed.com/articles/transit-data-in-openstreetmap/
#OpenStreetMap #TransitData
August 28, 2026 at 2:47 PM
Agencies contributing stops to OpenStreetMap should start with identifiers, not replacement geometry. Of 9,998 US bike-share stations checked, 6,222 were already mapped within 80 feet.
https://its-feed.com/articles/transit-data-in-openstreetmap/
#OpenStreetMap #TransitData
https://its-feed.com/articles/transit-data-in-openstreetmap/
#OpenStreetMap #TransitData
File presence badly overstates GTFS-Flex adoption: 333 readable US feeds carry a Flex file, but only 78 contain records. Header-only templates account for most of the gap.
https://its-feed.com/articles/what-is-gtfs-flex/
#GTFS #TransitData
https://its-feed.com/articles/what-is-gtfs-flex/
#GTFS #TransitData
August 21, 2026 at 7:47 PM
File presence badly overstates GTFS-Flex adoption: 333 readable US feeds carry a Flex file, but only 78 contain records. Header-only templates account for most of the gap.
https://its-feed.com/articles/what-is-gtfs-flex/
#GTFS #TransitData
https://its-feed.com/articles/what-is-gtfs-flex/
#GTFS #TransitData
Federal transit formula funding comes with a reporting condition, making NTD data unusually complete and comparable across agencies. It covers service, ridership, finances, assets, and safety.
https://its-feed.com/articles/national-transit-database/
#TransitData #PublicTransit
https://its-feed.com/articles/national-transit-database/
#TransitData #PublicTransit
August 18, 2026 at 2:48 PM
Federal transit formula funding comes with a reporting condition, making NTD data unusually complete and comparable across agencies. It covers service, ridership, finances, assets, and safety.
https://its-feed.com/articles/national-transit-database/
#TransitData #PublicTransit
https://its-feed.com/articles/national-transit-database/
#TransitData #PublicTransit
A bus-stop countdown is the end of a chain: GPS location, trip matching, prediction, then GTFS-Realtime. When the estimate jumps, stale positions or a bad trip match may be upstream.
https://its-feed.com/articles/how-real-time-arrival-predictions-work/
#GTFSRealtime #TransitData
https://its-feed.com/articles/how-real-time-arrival-predictions-work/
#GTFSRealtime #TransitData
August 17, 2026 at 7:47 PM
A bus-stop countdown is the end of a chain: GPS location, trip matching, prediction, then GTFS-Realtime. When the estimate jumps, stale positions or a bad trip match may be upstream.
https://its-feed.com/articles/how-real-time-arrival-predictions-work/
#GTFSRealtime #TransitData
https://its-feed.com/articles/how-real-time-arrival-predictions-work/
#GTFSRealtime #TransitData
A ghost bus appears when an app falls back to the schedule after a real vehicle is cancelled or disappears from the live feed. The countdown continues, but no bus is behind it.
https://its-feed.com/articles/ghost-buses/
#GTFSRealtime #TransitData
https://its-feed.com/articles/ghost-buses/
#GTFSRealtime #TransitData
August 17, 2026 at 2:47 PM
A ghost bus appears when an app falls back to the schedule after a real vehicle is cancelled or disappears from the live feed. The countdown continues, but no bus is behind it.
https://its-feed.com/articles/ghost-buses/
#GTFSRealtime #TransitData
https://its-feed.com/articles/ghost-buses/
#GTFSRealtime #TransitData
Usual disclaimer that I grabbed this graphic and info from MobilityData on LinkedIn
www.linkedin.com/posts/mobili...
www.linkedin.com/posts/mobili...
#tides #publictransit #transitdata #openstandards #mobilitydata | MobilityData
📊 Washington Metropolitan Area Transit Authority (WMATA), Caltrans, and Mountain Line (Missoula, MT) are joining us June 2 for a free public briefing on TIDES: the open standard for historical transit...
www.linkedin.com
May 13, 2026 at 9:25 PM
Usual disclaimer that I grabbed this graphic and info from MobilityData on LinkedIn
www.linkedin.com/posts/mobili...
www.linkedin.com/posts/mobili...
For #transitdata nerds I put together a mini calendar with an ical feed you can subscribe to for all #AP090 sessions: www.trb-transit-data.org/annual-meeti... #TRBAM
Annual Meeting 2025
TRB Standing Committee AP090
www.trb-transit-data.org
January 4, 2025 at 10:52 PM
For #transitdata nerds I put together a mini calendar with an ical feed you can subscribe to for all #AP090 sessions: www.trb-transit-data.org/annual-meeti... #TRBAM
Starting soon (noon US Eastern Time, today): what might be useful applications of large language models (LLMs) for transit? 🚍🖥🚆
The next Interagency #TransitData Discussion has three presentations on Generative AI in Transit.
Register: events.gcc.teams.microsoft.com/event/94c330...
The next Interagency #TransitData Discussion has three presentations on Generative AI in Transit.
Register: events.gcc.teams.microsoft.com/event/94c330...
January 22, 2025 at 3:19 PM
Starting soon (noon US Eastern Time, today): what might be useful applications of large language models (LLMs) for transit? 🚍🖥🚆
The next Interagency #TransitData Discussion has three presentations on Generative AI in Transit.
Register: events.gcc.teams.microsoft.com/event/94c330...
The next Interagency #TransitData Discussion has three presentations on Generative AI in Transit.
Register: events.gcc.teams.microsoft.com/event/94c330...
Starting at 6 at Yard House instead! #TRBAM #transitdata
DC folks: Dacha announces they're closing tonight—any alternative locations that could work for the #TRBAM transit data happy hour??
January 6, 2025 at 10:21 PM
Starting at 6 at Yard House instead! #TRBAM #transitdata
#TRBAM #TransitData Lightning talk highlights (will post link to slides at end of thread):
Computer vision for rail platform crowding estimates (Riccardo Fiorista, MIT CEE and @mitdusp.bsky.social Urban Mobility/Transit Lab) and passenger reidentification-based OD matrices (two presenters from RPI)
Computer vision for rail platform crowding estimates (Riccardo Fiorista, MIT CEE and @mitdusp.bsky.social Urban Mobility/Transit Lab) and passenger reidentification-based OD matrices (two presenters from RPI)
January 6, 2025 at 9:33 PM
#TRBAM #TransitData Lightning talk highlights (will post link to slides at end of thread):
Computer vision for rail platform crowding estimates (Riccardo Fiorista, MIT CEE and @mitdusp.bsky.social Urban Mobility/Transit Lab) and passenger reidentification-based OD matrices (two presenters from RPI)
Computer vision for rail platform crowding estimates (Riccardo Fiorista, MIT CEE and @mitdusp.bsky.social Urban Mobility/Transit Lab) and passenger reidentification-based OD matrices (two presenters from RPI)