JourneyWeb
Overview
JourneyWeb allows two or more journey planning engines with knowledge of different areas or transport modes to carry out distributed journey planning, that is to dynamically combine data from both servers to build up composite journeys that span the respective areas covered by the different engines.
JourneyWeb depends on NaPTAN, the UK standard for identifying stops, stations and other access points to Public Transport.
How is JourneyWeb used?
JourneyWeb is a request/response protocol: each exchange of data consists of a request message and a response message. Both journey planners are peers - they can both initiate queries by sending a request. The messages consist of XML documents, whose tags and content are exactly specified by the JourneyWeb Schema.
| Request | Purpose | Version |
|---|---|---|
| POINTS | Returns a list of remote stops for a NPTG locality or coordinate | 1.0 |
| JOURNEYS | Calculates a journey between combinations of stops | 1.0 |
| LEG DETAILS | Returns details about specific Journey Legs | 3.0 |
| TIMETABLES | Returns a matrix of timetable data suitable for producing columnar timetables. | 2.1 |
| STOPEVENTS | Returns departures for a stop at a specified time. Responses can include real time as well as scheduled information. | 2.1 |
| SERVICES | Returns a list of services for which the remote journey planner can return timetables. | 2.1 |
| OPERATORS | Returns the transport operators supported by the remote journey planner. | 2.1 |
The JourneyWeb Schema also includes additional response messages to handle error conditions.
Compliance levels
Not all journey planners will necessarily support all the features of JourneyWeb. The different named features that can be supported are systematically identified as distinct modules in the 'Compliance' section of the Documentation.
Page last updated: 2005/09/05
