# Interline Technologies
> We're a product and consulting business that helps organizations understand and improve transportation networks, digitally.
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## Pages
- [About Our Team and Firm](https://www.interline.io/about.md) - We founded Interline Technologies in 2018 in the San Francisco Bay Area, and we continue to serve our customers from here, along with a team that's distributed across the United States. Principals Drew Dara-Abrams Drew Dara-Abrams Ph.D. is a co-founder and Principal at Interline Technologies. At In…
- [Consulting services by Interline](https://www.interline.io/consulting.md) - We integrate Interline’s Transitland platform and routing platform into a wide range of systems, including: * Traveler-information and journey-planning systems (especially for public mass transit and “shared” mobility) * Transportation-planning and accessibility-analysis tools * Transportation-netw…
- [HERE XYZ](https://www.interline.io/docs-here-xyz.md) - 💡2021 HERE has deprecated HERE XYZ and Studio 1.0. See the HERE Studio 2.0 documentation for more information. These tutorials may not describe Studio 2.0 functionality.💡October 1, 2018 Read our blog post for an introduction to this collaboration. Interline is collaborating with HERE to demonstra…
- [Documentation](https://www.interline.io/docs.md) - For documentation of current Interline services, see: * Transitland APIs * OSM Extracts download service * PlanetUtils library * Valhalla Tilepacks documentation is sent to subscribers via email * Station Editor documentation is sent to subscribers via email The following documentation is out-of-da…
- [Home](https://www.interline.io/home.md) - Hello We help organizations understand and improve transportation networks, digitally. Our systems support thousands of public transit agencies, intercity bus and rail operators, and shuttle systems across the world. Our datasets power applications across the planning, real-estate, healthcare, and…
- [Terms of Service](https://www.interline.io/legal-terms.md) - Effective as of May 9, 2025 This revision: * Adjusts section numbering * Revises Section 2 regarding Third Party Data * Revises Section 2 to cover attribution of OpenStreetMap and Transitland data * Adds Section 5 regarding Publicity * In Section 6 specifies Alameda County, California Please carefu…
- [Applied Research](https://www.interline.io/resources-applied-research.md) - Interline and our partners occasionally carry out applied research on transportation and mobility topics, which we are glad to share for free access online.
- [Resources](https://www.interline.io/resources.md) - We're pleased to offer the following complementary resources: * Interline Blog * Applied Research Reports * Transitland website * OSM Extracts website And we're pleased to offer the following paid resources: * Expert Consulting Services
- [Interline Routing Platform](https://www.interline.io/routing-platform.md) - The Interline Routing Platform combines together: * Valhalla - which we host globally for auto, bike, and pedestrian directions * Transitland Routing API — which we host across the United States for bus, train, and subway directions 🚌Previously Interline was more closely involved in the OpenTripPl…
- [Support](https://www.interline.io/support.md) - If you are on a paid Transitland or routing platform plan, sign into your Interline account to file a support ticket. If you are on a free Transitland plan, please use the Transitland discussion board at GitHub, where we welcome questions (as well as helpful answers) from all. 📖Please also check I…
- [All bus, train, and subway stops across the United States](https://www.interline.io/transitland-all-us-stops-bulk-data.md) - Our most commonly requested bulk export from the Transitland platform is a dataset of all transit stops across the United States. This export includes information about the stop/station location itself, as well as the routes that serve that stop. Routes include bus, train, subway/metro, ferry, and…
- [Transitland APIs for Developers](https://www.interline.io/transitland-apis-for-developers.md) - Transitland is an open-data platform built on thousands of public-transit data feeds from around the world. We started Transitland in 2014 and continue to expand the platform. It’s now the largest and most feature-rich GTFS and GTFS Realtime aggregator. Transitland is the ideal solution for using d…
- [How does Transitland compare to GTFS Data Exchange?](https://www.interline.io/transitland-compare-gtfs-data-exchange.md) - When GTFS Data Exchange shut down in 2016, its creator recommended that its users and developers switch to Transitland. Learn how the two platforms for finding GTFS feeds compare. Brief history of GTFS Data Exchange GTFS Data Exchange operated from 2008 to 2016 as a website “designed to help develo…
- [How does Transitland compare to OpenMobilityData?](https://www.interline.io/transitland-compare-openmobilitydata.md) - OpenMobilityData is a website and API for browsing GTFS and GTFS Realtime feeds. The service was originally known as TransitFeeds. It is no longer maintained, but portions do remain available for users. Learn how OpenMobilityData compares to Transitland. Brief history of TransitFeeds and OpenMobili…
- [How does Transitland compare to the National Transit Map?](https://www.interline.io/transitland-compare-us-national-transit-map.md) - The US National Transit Map is a set of GIS layers in the National Transportation Atlas Database (NTAD). This page describes how it's produced, what it includes, and how it compares with Transitland Datasets and Transitland APIs. Brief History of the US National Transit Map Many public transit agen…
- [Transitland vs. alternative transit data sources and systems](https://www.interline.io/transitland-compare.md) - Compare Transitland’s powerful functionality with other mobility data processing systems and sources for GTFS, GTFS Realtime, and GBFS feeds. Compare Transitland vs. GTFS Data Exchange Learn about the history of GTFS Data Exchange and how its key functionality is now available through the Transitla…
- [Transitland Bulk Transit Data Exports](https://www.interline.io/transitland-custom-bulk-transit-data.md) - Interline produces bulk data exports from the Transitland platform. We provide both standardized exports and exports that are customized for each client’s needs. Our clients use these bulk exports to power their own transportation analysis engines, real-estate assessments, routing engines, and othe…
- [Intro to Transitland](https://www.interline.io/transitland.md) - Transitland is an open-data platform built on thousands of public-transit data feeds from around the world. We started Transitland in 2014 and continue to expand the platform. It’s now the largest and most feature-rich GTFS and GTFS Realtime aggregator. Transitland is the ideal solution for using d…
- [Valhalla Tilepacks](https://www.interline.io/valhalla-tilepacks.md) - Why Valhalla Tilepacks? Valhalla is fully open-source and available for anyone to operate. In our experience helping a wide range of organizations operate Valhalla, we've found that it's simple for everyone to run Valhalla instances for routing requests — but it's difficult to run the pipeline that…
- [Intro to Valhalla](https://www.interline.io/valhalla.md) - Valhalla is a multi-purpose routing engine originally created by Mapzen's mobility team, which was led by and included the founders of Interline. Now, Valhalla is also used by organizations like Mapillary (street imagery), Mapbox (mapping APIs), Tesla (electric cars), and Sidewalk Labs (urban real-…

## Posts
- [Riding transit to California's beaches](https://www.interline.io/blog/riding-transit-to-californias-beaches.md) - California Coastal Commission maps car parking at 1,600+ public access points. A spatial join with Transitland Datasets reveals which trailheads, surf spots, and overlooks can be reached by bus or rail.
- [Explore GTFS-Pathways station layouts using Transitland](https://www.interline.io/blog/explore-gtfs-pathways-station-layouts-using-transitland.md) - Visualize subway station topologies. Inspect wheelchair-accessible navigation. Transitland's free GTFS-Pathways viewer is powered by Interline Station Editor.
- [Same data, different zip: How to identify unique GTFS feed versions](https://www.interline.io/blog/gtfs-checksum-versioning.md) - Standard zip hashes are unreliable for GTFS versioning due to variable metadata. Learn to use content-aware checksums to accurately identify unique transit datasets.
- [Interline at MobilityData's 2025 Workshop](https://www.interline.io/blog/interline-at-mobilitydatas-2025-workshop.md) - We're excited to be participating in this year’s MobilityData Workshop in Vancouver. Interline has been a dues-paying member of MobilityData since its founding, and our team contributed to the early meetings that led to the organization’s creation. We’re proud to continue supporting MobilityData’s…
- [Easily inspect GTFS Realtime using Transitland's website or API](https://www.interline.io/blog/easily-inspect-gtfs-realtime-using-transitlands-website-or-api.md) - Web browsers and text editors can't open GTFS Realtime. But with Transitland, you now can.
- [Announcing transitland-lib v1.0.0](https://www.interline.io/blog/announcing-transitland-lib-v1-0-0.md) - We're pleased to announce the release of transitland-lib version 1.0.0. This software library, written in the Go programming language, is the foundation of the Transitland platform and integral to a growing range of purpose-built applications. From experiment to production In 2019, the Interline te…
- [Transitland for nighttime](https://www.interline.io/blog/transitland-for-nighttime.md) - Our engineering team has recently been refactoring some of the internals of the Transitland website. The main goal has been to update various components and dependencies, to better support Interline's consulting clients who also use these components. As a side effect: the canonical Transitland webs…
- [Built with Transitland: Digital departures screen](https://www.interline.io/blog/built-with-transitland-instructables.md) - Want to build your own display to show when a bus, train, or ferry next departs? Here's a fun Instructables how-to guide.
- [Interline at TRB AM 2025](https://www.interline.io/blog/interline-at-trb-am-2025.md) - We'll be represented at the US Transportation Research Board Annual Meeting in Washington, D.C., by Interline principal Drew Dara-Abrams. He'll be presenting on Sunday, January 5, 2025 as part of the workshop on Open-Source Data Repositories and Technologies: All conference attendees are welcome to…
- [US National Transit Database releases data and requests more feedback](https://www.interline.io/blog/us-national-transit-database-releases-data-and-requests-more-feedback-2.md) - Our recommendations to the US Federal Transit Administration regarding National Transit Database: Proposed Reporting Changes and Clarifications for Report Years 2025 and 2026.
- [How current is that schedule?](https://www.interline.io/blog/how-current-is-that-schedule.md) - The GTFS Best Practices guide recommends publishing data for the current data plus at least 7 days in the future. We've used the Transitland archives to assess how many feeds meet this goal.
- [Giving equal prominence to buses and trains on the map](https://www.interline.io/blog/giving-equal-prominence-to-buses-and-trains-on-the-map.md) - We've refined Transitland's global map to emphasize where riders can access the most frequent transit service. Thanks to leaders at San Francisco's transit agency for informing this improvement.
- [Turning off the Transitland v1 Datastore API](https://www.interline.io/blog/turning-off-the-transitland-v1-datastore-api.md) - We announced the multi-step deprecation of the Transitland v1 API in a blog post in 2019. The time has now come the Interline team to finally turn off the v1 Datastore API.
- [US Federal Transit Administration finalizes plan to collect GTFS URLs in US National Transit Database](https://www.interline.io/blog/us-ntd-reporting-gtfs-adopted.md) - To meet meet the Bipartisan Infrastructure Law's requirement to collect data on American transit agencies' "geographic service area coverage," the US Federal Transit Administration will begin to require GTFS feeds from fixed-route transit agencies that receive federal funds.
- [Follow the Interline blog using RSS](https://www.interline.io/blog/interline-blog-rss-feed.md) - For the latest updates from Interline, you can now follow our blog using an RSS feed reader
- [Updated GTFS-Fares v2 for the SF Bay Area](https://www.interline.io/blog/mtc-regional-gtfs-feed-fares-updates.md) - MTC and Interline have released updated fares and transfer discounts for over 30 Bay Area transit agencies using the adopted GTFS-Fares v2 "base implementation" and a series of proposed extensions.
- [US National Transit Database to collect GTFS URLs](https://www.interline.io/blog/us-ntd-reporting-gtfs.md) - American public transit agencies that receive federal funds are required to report information for inclusion in the National Transit Database. The Federal Transit Administration is proposing that each agency will also provide a URL for a GTFS feed in their NTD reports.
- [Observed stop arrivals and departures through the SF Bay Area](https://www.interline.io/blog/mtc-regional-stop-observations.md) - Interline and the Metropolitan Transportation Commission are now releasing monthly "stop observation" datasets derived from the Regional GTFS Realtime Feed.
- [Downloading archived GTFS feed versions from Transitland](https://www.interline.io/blog/downloading-archived-gtfs-feed-versions-from-transitland.md) - We are adjusting access to Transitland's GTFS feed version archive to better balance concerns.
- [Transitland Vector Tile Improvements](https://www.interline.io/blog/vector-map-tiles.md) - Since releasing the global transit map and v2 Vector Tiles API last year, we've added a variety of improvements in functionality and in rendering.
- [Supporting the Mobility Data Interoperability Principles](https://www.interline.io/blog/mobility-data-interoperability-principles.md) - Interline is pleased to sign the newly drafted Mobility Data Interoperability Principles.
- [SF Bay Area's Regional GTFS Realtime Feed](https://www.interline.io/blog/mtc-regional-gtfs-realtime-feed.md) - The Metropolitan Transportation Commission and Interline are pleased to announce a single consolidated Regional GTFS Realtime feed. Developers can now get a comprehensive and up-to-date views of the Bay Area's bus, train, and ferry services.
- [Use Transitland v2 to Search Across Operators, Feeds, and Routes](https://www.interline.io/blog/transitland-v2-search.md) - Here's one of our favorite new additions to Transitland v2: search across all of the operators, feed records, and routes in Transitland.
- [Transitland v2 Adds a Global Map and Vector Tiles](https://www.interline.io/blog/transitland-v2-vector-map-tiles.md) - Here's one of our favorite new additions to Transitland v2: a "slippy map" of transit routes and stops around the world.
- [Our GTFS Realtime validation report published by the Transportation Research Board](https://www.interline.io/blog/trb-transit-idea-gtfs-realtime-report.md) - In 2019 and 2020, Interline and the Center for Urban Transportation Research at University of South Florida collaborated on a Transit IDEA Program grant from the US Transportation Research Board. Our goal has been to help transit agencies to validate and improve the quality of their GTFS Realtime f…
- [SF Bay Area's Regional GTFS Feed Expanded](https://www.interline.io/blog/mtc-regional-gtfs-feed-additions.md) - 💡October 4, 2022: MTC and Interline have released updated fares and transfer discounts for all Bay Area transit agencies using the adopted GTFS-Fares v2 "base implementation." See this blog post for more information.💡September 10, 2021: MTC and Interline have now released the Regional GTFS Realti…
- [A Regional GTFS Feed for the San Francisco Bay Area](https://www.interline.io/blog/mtc-regional-gtfs-feed-release.md) - Last year, Interline began a "startup in residence" at the Metropolitan Transportation Commission. Now we're pleased to publicly release our first creation: the San Francisco Bay Area's Regional GTFS Feed.
- [Even more geospatial tools supporting the "GeoJSONL" format](https://www.interline.io/blog/here-cli-support-geojsonl.md) - "GeoJSONL" has the easy readability of a GeoJSON file without the the performance limitations of the format. Last year we started producing GeoJSONL files from our OSM Extracts service. Now a growing list of long-existing and brand-new geospatial tools.
- [Transportation Research Board funds an open platform for transit agencies to improve the quality of their real-time data](https://www.interline.io/blog/transportation-research-board-funds-gtfs-realtime.md) - We’re excited to share that the Transportation Research Board has awarded a Transit IDEA Program grant to Interline. We’re using this unique opportunity to expand Transitland to support GTFS Realtime feeds.
- [Metropolitan Transportation Commission and Interline to tackle regional transit data challenges](https://www.interline.io/blog/metropolitan-transportation-commission-selects-interline.md) - We're excited to share that the Metropolitan Transportation Commission has selected Interline through a competitive process to participate in its 2019 Startup in Residence (STIR) program. Interline and MTC will collaborate on the problem of regional transit data.
- [Transitland Continues in 2019](https://www.interline.io/blog/transitland-continues.md) - Just like a garden, open-source and open-data projects require continual tending. With 2019 beginning, we're glad to share more widely these plans for Transitland's ongoing tending and growth as an open platform.
- [Transitland Version 2](https://www.interline.io/blog/tlv2.md) - What first started as two simple, separate, little experiments has grown into the seeds of a major revision of the entire Transitland platform: Transitland Version 2.
- [Bringing Back the Spirit of Map Mashups: Combine Open Geodata APIs using HERE XYZ](https://www.interline.io/blog/here-xyz-open-geo-data.md) - Interline and HERE are collaborating to make Interline's open data services like OSM Extracts and the Transitland API easy to combine, mix, filter, analyze, and visualize using the new HERE XYZ platform.
- [GeoJSONL: An optimized format for large geographic datasets](https://www.interline.io/blog/geojsonl-extracts.md) - GeoJSON Lines (geojsonl) is a simple, newline-delimited variant of GeoJSON that allows large datasets to be loaded with a much lower memory footprint and easily integrate with traditional text-based tools. Interline OSM Extracts now provides geojsonl, along with a small but growing number of tools.
- [Practices that help complex and collaborative open-source projects survive and thrive](https://www.interline.io/blog/open-source-best-practices-for-otp-summit.md) - We've encountered many practices that can help complex and collaborative open-source projects survive and thrive. This blog post provides a tour through many open-source practices, particularly ones that are helpful for aging but popular software packages like OpenTripPlanner.
- [Producing 200 OpenStreetMap extracts in 35 minutes using a scalable data workflow](https://www.interline.io/blog/scaling-openstreetmap-data-workflows.md) - Interline now offers OSM Extracts, a service enabling software developers and GIS professionals to download chunks of OpenStreetMap data for 200 major cities and regions around the world. OSM Extracts is simple. It’s a 3 step process that you can run yourself. We’ll describe these steps, as well as…

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