name: Transit Vocabulary
description: Domain vocabulary for the Transit API covering public transit data, multimodal mobility, and trip planning
tags:
  - Public Transit
  - Mobility
  - GTFS
  - Trip Planning
terms:
  - term: GTFS
    label: General Transit Feed Specification
    definition: Open format for public transportation schedules and associated geographic information
    related:
      - GTFS Realtime
      - GTFS Static

  - term: GTFS Realtime
    label: GTFS Realtime
    definition: Protocol buffer-based feed specification for real-time vehicle positions, trip updates, and service alerts
    related:
      - Vehicle Position
      - Trip Update
      - Service Alert

  - term: Stop
    label: Transit Stop
    definition: A physical location where passengers can board or alight from a transit vehicle
    related:
      - Route
      - Departure
      - Network

  - term: Route
    label: Transit Route
    definition: A group of trips displayed to riders as a single service, identified by name or number
    related:
      - Stop
      - Trip
      - Network

  - term: Trip
    label: Transit Trip
    definition: A specific journey made by a vehicle along a route at a scheduled time
    related:
      - Route
      - Stop
      - Vehicle Position

  - term: Departure
    label: Departure
    definition: A scheduled or real-time event of a transit vehicle leaving a stop
    properties:
      - scheduled_time
      - real_time
      - headsign
      - wheelchair_accessible

  - term: Network
    label: Transit Network
    definition: A collection of routes, stops, and services operated by one or more transit agencies in a geographic area
    related:
      - Agency
      - Route
      - Stop

  - term: Agency
    label: Transit Agency
    definition: An organization responsible for operating public transit services
    related:
      - Network
      - Route

  - term: Headsign
    label: Headsign
    definition: Text displayed on a vehicle indicating its destination or route direction
    related:
      - Trip
      - Departure

  - term: Multimodal
    label: Multimodal Trip
    definition: A journey that combines multiple modes of transportation such as transit, walking, cycling, or shared mobility
    related:
      - Shared Mobility
      - Trip Planning

  - term: Shared Mobility
    label: Shared Mobility
    definition: Short-term access to transportation including bike share, e-scooters, carshare, and ride-hailing
    related:
      - Multimodal
      - First/Last Mile

  - term: First/Last Mile
    label: First/Last Mile
    definition: The beginning or ending segment of a transit trip connecting riders to or from transit stops
    related:
      - Shared Mobility
      - Walking

  - term: Real-Time
    label: Real-Time Data
    definition: Live transit data including current vehicle positions, predicted arrival/departure times, and active alerts
    related:
      - Vehicle Position
      - GTFS Realtime

  - term: Vehicle Position
    label: Vehicle Position
    definition: Real-time geographic location of a transit vehicle on its route
    related:
      - Real-Time
      - Trip

  - term: Service Alert
    label: Service Alert
    definition: A notification about disruptions, delays, or changes affecting transit service
    related:
      - Network
      - Route

  - term: Wheelchair Accessible
    label: Wheelchair Accessible
    definition: Indicator that a stop or vehicle accommodates passengers with mobility devices
    related:
      - Stop
      - Departure

  - term: GOFS
    label: General On-Demand Format Specification
    definition: Lightweight format specification for on-demand transit service providers to define their service
    related:
      - On-Demand Transit
      - GTFS

  - term: Itinerary
    label: Trip Itinerary
    definition: A complete trip plan consisting of one or more legs with departure and arrival times
    related:
      - Leg
      - Trip Planning

  - term: Leg
    label: Trip Leg
    definition: A single continuous segment of a trip using one mode of transportation
    related:
      - Itinerary
      - Mode

  - term: Mode
    label: Transportation Mode
    definition: The type of transportation used for a trip leg (bus, rail, walk, bicycle, scooter, etc.)
    values:
      - bus
      - rail
      - metro
      - tram
      - walk
      - bicycle
      - scooter
      - car
      - ferry