Query schedules using the Datastore API

The Transitland Datastore schedule API collapses the many elements of a schedule into an entity. Transitland models each trip between two stops as an edge, called a ScheduleStopPair (SSP). Each SSP contains an origin stop, a destination stop, a route, an operator, and arrival and departure times. Each edge also includes a service calendar, describing which days a trip is possible. Accessibility information for wheelchair and bicycle riders is included, if available.

Some of this data is normally split across multiple GTFS tables, but is here denormalized for simpler access: each edge contains enough information to get from one stop to another, to another, and finally to your destination.

ScheduleStopPair Data Model

These are the attributes and data types of a ScheduleStopPair.

Data types

Times can be specified with more than 24 hours, as indicated by GTFS. For example, 25:10 is 1:10am the day after the trip begins.

Timepoint source

• gtfs_exact: An exact timepoint in the GTFS
• gtfs_interpolated: An interpolated timepoint in the GTFS
• transitland_interpolated_linear: Interpolated based on linear stop sequence
• transitland_interpolated_geometric: Interpolated based on straight-line distance
• transitland_interpolated_shape: Interpolated based on shape_dist_traveled

Pickup (origin) and drop-off (destination)

• null: Regularly scheduled pickup and drop-off
• unavailable: Pickup or drop-off not available
• ask_driver: Ask the driver for pickup or drop-off
• ask_agency: Phone the agency to schedule in advance

Frequency-based schedules

A frequency-based schedule runs at an interval, instead of at specific departure and arrival times. When frequency_type is present, the trip is repeated every frequency_headway_seconds beginning at frequency_start_time and ending at frequency_end_time. See the GTFS documentation for frequencies.txt for more information.

The values for frequency_type are:

• exact: service is exactly scheduled.
• not_exact: service repeats, but timepoints are not exact

Query parameters

The main ScheduleStopPair API endpoint is /api/v1/schedule_stop_pairs. It accepts the following query parameters, which may be freely combined.

The date and origin_departure_between query parameters accept special values.

• date=today: Use the current local date.
• time=now: Use the current time. You can also specify now+<seconds> or now-<seconds>. Example: time=now-600,now+600.

For both of these options, a local timezone must be specified by providing one of the following parameters: origin_onestop_id, destination_onestop_id, or operator_onestop_id.

Note: When you query schedule_stop_pair, the origin and destination must be directly connected without any stops between them. For example, you can query stops that are next to each other or are coupled as an express route. To find all the trips that travel between certain stops, use the Mapzen Turn-by-Turn API with multimodal costing, which can extract the intermediate stops and do route planning.

Response format

{
	"schedule_stop_pairs": [{
		"origin_onestop_id": "s-69y7pexjtx-plazademayo<1076s",
		"destination_onestop_id": "s-69y7pesyw0-perú<1075s",
		"route_onestop_id": "r-69y7n-a",
		"route_stop_pattern_onestop_id": "r-69y7n-a-f48841-3c4d66",
		"operator_onestop_id": "o-69y7-sbase",
		"feed_onestop_id": "f-69y7-recursosdatabuenosairesgobar",
		"feed_version_sha1": "95742a1a65826abfa23f5aeaeeb082e45f066801",
		"origin_timezone": "America/Argentina/Buenos_Aires",
		"destination_timezone": "America/Argentina/Buenos_Aires",
		"trip": "A01",
		"trip_headsign": "San Pedrito",
		"block_id": null,
		"trip_short_name": null,
		"wheelchair_accessible": null,
		"bikes_allowed": null,
		"pickup_type": null,
		"drop_off_type": null,
		"shape_dist_traveled": 0.34,
		"origin_arrival_time": "05:00:00",
		"origin_departure_time": "05:00:24",
		"destination_arrival_time": "05:00:58",
		"destination_departure_time": "05:01:22",
		"origin_dist_traveled": 58.7,
		"destination_dist_traveled": 343.2,
		"service_start_date": "2014-03-01",
		"service_end_date": "2017-12-31",
		"service_added_dates": [],
		"service_except_dates": ["2015-01-01", "2015-02-16"],
		"service_days_of_week": [true, true, true, true, true, false, false],
		"window_start": "05:00:24",
		"window_end": "05:00:58",
		"origin_timepoint_source": "gtfs_exact",
		"destination_timepoint_source": "gtfs_exact",
		"frequency_start_time": "05:00:00",
		"frequency_end_time": "05:56:00",
		"frequency_headway_seconds": 480,
		"frequency_type": "exact",
		"created_at": "2017-02-22T03:42:22.827Z",
		"updated_at": "2017-02-22T03:42:22.827Z"
	}],
	"meta": {
		"sort_key": "id",
		"sort_order": "asc",
		"offset": 0,
		"per_page": 1,
		"next": "https://transit.land/api/v1/schedule_stop_pairs?feed_onestop_id=f-69y7-recursosdatabuenosairesgobar&offset=1&per_page=1&sort_key=id&sort_order=asc"
	}
}