Stops

Contents

Stations data model
StopStations API
Generated platforms and egresses

Transitland represents each place a person may board or exit a transit vehicle as a Stop. Generally, these are imported from GTFS feeds, but Transitland also allows users to create Stops that are not associated with a Feed.

Stop data model

Each Transitland Stop has a unique onestop_id, such as s-9q9p1bbfkc-lakemerritt; the Onestop ID format includes an s prefix, a geohash encoding the approximate location, and a short identifier.

Basic Stop attributes include name, a simple name for the station that would be used on printed schedules, and timezone for the local timezone. The wheelchair_boarding attribute contains accessibility information: when true, the location is generally wheelchair accessible, when false it is known not to be accessible, and when null the accessibility is not known.

The geometry attribute may be either a single point or a polygon containing the station extent. In either case, the geometry_centroid attribute will always be a point that represents a single location. The centroid is set by 1) the geometry_reversegeo attribute if available 2) geometry if it is a point, or 3) the calculated centroid of geometry if it is a polygon. The location is also referenced by the osm_way_id attribute, which is the closest pedestrian-accessible OpenStreetMap way to the Stop. The osm_way_id is checked and updated periodically, approximately once every 48 hours, to reflect any changes to OpenStreetMap; last_conflated_at is the timestamp of the last check.

The Stops API also returns several relations to Operators and Routes for convenience. routes_serving_stop is an array of objects, one for each Route that visits the stop, and includes route_onestop_id and route_name as well as the operator_onestop_id and operator_name for the route's operator. Similarly, operators_serving_stop includes the operator_onestop_id and operator_name for each Operator that serves the stop. served_by_vehicle_types is the aggregated vehicle_type of all the Routes that visit the stop.

Attribute	Type	Description
`onestop_id`	Onestop ID	Stop Onestop ID
`geometry`	Geometry	Stop geometry; can be point or polygon
`name`	String	Stop name
`timezone`	String	Stop timezone
`osm_way_id`	Integer	Conflated OSM way ID
`last_conflated_at`	Datetime	Timestamp of last time `osm_way_id` was checked
`served_by_vehicle_types`	Array	Vehicle types that visit this Stop
`wheelchair_boarding`	Boolean	Wheelchair accessible
`geometry_reversegeo`	Geometry	Alternate geometry; always a point
`geometry_centroid`	Geometry	Stop centroid; always a point
`operators_serving_stop`	Object array	Operators serving this Stop
`routes_serving_stop`	Object array	Routes serving this Stop
`tags`	Object	Tags

Stops API

Endpoint: /api/v1/stops

Standard entity query parameters:

Query parameter	Type	Description	Example
`onestop_id`	Onestop ID(s)	Onestop ID	Lake Merritt BART
`lat`	Float	Latitude	Near a point
`lon`	Float	Longitude	Near a point
`r`	Float	Radius (meters) for `lat`/`lon`	Within 1km of a point
`bbox`	Bounding box	Bounding box: ymin, xmin, ymax, xmax	Downtown Oakland
`updated_since`	Datetime	Entity has been modified since	Updated in 2017
`imported_from_feed`	Onestop ID	Imported from Feed	Imported from BART
`imported_from_feed_version`	Feed Version	Imported from Feed Version	Imported from a specific BART version
`imported_with_gtfs_id`	String(s)	Associated with GTFS entity	Imported from BART with GTFS ID "LAKE"
`tag_key`	String	Tag key	Includes tag "stop_url"
`tag_value`	String	Tag value	Tag "zone_id" is "1"
`include`	String(s)	Include in response: issues, geometry, imported_from_feeds	Include Issues and import data
`exclude`	String(s)	Exclude from response: issues, geometry, imported_from_feeds	Exclude geometry

Plus:

Query parameter	Type	Description	Example
`served_by`	Onestop ID(s)	Served by Operator or Route	Served by BART or AC Transit Line 1
`served_by_vehicle_types`	String(s)	Served by vehicle types	SFMTA light rail stops
`wheelchair_boarding`	Boolean	Wheelchair accessible	Accessible BART stations

Stop import process

When a new GTFS feed is imported, existing Transitland Stops are matched with GTFS stops.txt stops based on the GTFS stop_id used in the last import. If a match is found, the existing Transitland Stop is updated; if a match is not found, a new Transitland Stop is created.

Stations

Several Stops can be grouped together into a StopStation complex. A StopStation can have several StopPlatforms, each representing a platform where a transit vehicle can stop, and several StopEgresses, where pedestrians may enter or exit a station.

Stations data model

The StopStation, StopPlatforms and StopEgresses models are very similar to the plain Stop model.

The significant differences are that a StopStation will include nested StopPlatforms in stop_platforms and StopEgresses in stop_egresses. Additionally, the top-level StopStation will include operators_serving_stop_and_platforms, routes_serving_stop_and_platforms, and vehicle_types_serving_stop_and_platforms instead of the similarly named Stop relations.

A StopEgress includes an additional directionality attribute to note if a pedestrian can enter (street-to-station), exit (station-to-street), or both enter and exit the station. A StopEgress does not include operators_serving_stop and routes_serving_stop, since it is not visited by trips.

A StopPlatform does not include osm_way_id, last_conflated_at, or directionality, since it does not connect to the street network.

StopStations API

Endpoint: /api/v1/stop_stations

The StopStations endpoint has the same query parameters as the Stop endpoint, plus:

Query parameter	Type	Description	Example
`min_platforms`	Integer	Minimum number of `StopPlatforms`	At least 10 platforms
`min_egresses`	Integer	Minimum number of `StopEgresses`	At least 1 egress

Generated platforms and egresses

By default, the StopStations endpoint will include a generated StopEgress or StopPlatform if none exist, using the values from the StopStation. Any generated entity will have a generated attribute with a value of true. This commonly happens when a regular Stop with no platforms or egresses defined is accessed through the StopStations endpoint. This behavior can be disabled by setting the exclude query parameter to generated.