GTFS Guides
Practical guides that help you read, understand and analyze GTFS transit feeds, whether you are a transit planner, a developer or a data enthusiast. Prefer to dive straight in? Open the app, or read more about the GTFS Viewer and the Map Viewer.
TransitLens Quick Start Guide
Go from a raw GTFS feed to a working map in minutes. Load a feed, explore routes and stops, use the Inspector, apply filters, and analyze transit networks step by step.
Read guideHow to Read GTFS Data
Learn what GTFS is, explore the key files inside a feed, and understand how routes, trips, and stops connect to describe a transit network.
Read guideUnderstanding GTFS Calendars
Understand how calendar.txt and calendar_dates.txt define when transit services run, including regular schedules, exceptions, and holiday service.
Read guideGTFS Routes, Trips & Stops Explained
Dive into routes.txt, trips.txt, stops.txt, and shapes.txt: the core files that describe where transit vehicles go and how they get there.
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