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Primary PDFs

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What each document is for

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Transit specification

The transit specification is the main technical source. It covers the transit endpoint families, request parameters, XML and JSON examples, SIRI message structures, GTFS+ files, historic feed notes, and shapes coverage.

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Overview specification

The overview specification defines the broader 511 data-exchange context: encoding, language, authentication, throttling, discovery, jurisdictions, and other shared protocol guidance.

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Data agreement

The data agreement defines the license, attribution expectations, branding limits, disclaimers, indemnification, and termination rules for anyone using 511-provided data.

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Pathways coverage

The pathways document is a coverage list. It identifies which stations and hubs are represented in pathways data.