What this site covers
The official 511 transit PDFs contain three different kinds of material:- endpoint and parameter definitions
- standards and message-structure context
- usage policy, attribution, and coverage notes
Request basics
Authentication, formats, rate limits, errors, and request-construction quirks.
Static data
Operators, lines, stops, patterns, timetables, holidays, and shapes.
Realtime data
StopTimetable, StopMonitoring, VehicleMonitoring, and legacy SIRI service families.
Bulk feeds
GTFS downloads, GTFS-Realtime, GTFS+ files, and historic regional feed notes.
Source model
The PDFs describe a mixed standards stack:- static schedule and network resources are represented with NeTEx structures inside a SIRI
ServiceDelivery - realtime stop and vehicle state is modeled with SIRI service families
- bulk static feeds use GTFS
- bulk realtime feeds use GTFS-Realtime
- operational and legal constraints are defined separately in the overview specification and data agreement
How to use it
Use the Guides tab for the explanatory material and the API reference tab for the operation-by-operation surface.Source documents
Open the local PDF copies that back this reference.