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About VIA Developer Resources

VIA has made resources available to software developers, to promote the use of transit and information related to transit. At this time these resources include a schedule published in the General Transit Feed Specification (GTFS) format. As more resources are made available they will be announced here.

View Developer's License Agreement

Data Files

GTFS-real-time (GTFSRT) data consists of URLs that contain: trip updates, service alerts, and vehicle positions. The definition of this format and each data set are linked below.

Transit Terms

Learn more about commonly used transit terms and definitions.

  • Block
    A collection of trips assigned to a vehicle for a day.
  • Direction
    One of several possible directions of travel –inbound, outbound, westbound, eastbound, northbound and southbound– on a route. (Example: route 2 Blanco is “southbound” to downtown, and “northbound” to Loop 1604).
  • Location ID
    The unique number that identifies each VIA bus stop. Publicly this number is referred to as a StopID.
  • Pattern
    A unique travel path through the street network to visit selected stops for one trip.
  • Route
    A collection of ordered stops presented publicly as a “route” with a name (such as “2 Blanco”) and represented internally as an integer.
  • Timepoint
    One of several stops on each route that serves as a benchmark for whether a trip is running on time.
  • Trip
    An iteration of a vehicle traveling along a given pattern. (Example: Route 2 Blanco makes a trip from downtown to Loop 1604 & US 281. Loop 1604 & US 281 to downtown would be its next trip).
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