Lenka Zajíčková - The data model for data management of public transport in the Czech Republic
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Transcript of Lenka Zajíčková - The data model for data management of public transport in the Czech Republic
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THE DATA MODEL FOR DATA MANAGEMENT
OF PUBLIC TRANSPORT
Lenka ZAJÍČKOVÁ
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Management of public transport network geodata
• geodata aren´t administered by a single authority• there are even no mandatory regulations• accuracy or up-to-dateness of these geodata aren´t subject to any standardization
• public transport network data are managed by − Integrated Transport Systems organizers
(coordinators) in particular regions − directly by public transport operators
www.geoinformatics.upol.cz
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Existing geodata of public transport
• incomplete data warehouses• incorrectly located objects• layers without the system of coordinates• errors like undershoots, overshoots • missing attributes• inappropriate logical structure and method of data management
• incompatible data for exchange between data warehouses
www.geoinformatics.upol.cz
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Support for solution
• existing world standards for the exchange of public transport data− GTFS (General Transit Feed Specification) − IFOPT (Identification of Fixed Objects in Public Transport)− SIRI (Service interface for real-time information)− NeTEx (Network Exchange)
• accepted czech format – Uniform Data Format (JDF)
• new standard for public transport data in the Czech Republic - Uniform Data System for Public Transport (JSDV)
www.geoinformatics.upol.cz
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www.geoinformatics.upol.cz
Data model for public transport network management
• for the Olomouc Region managed by authority Coordinator of Integrated Public Transport System (KIDSOK)
• developed by KIDSOK, company ASSECO Central Europe and Department of Geoinformatics UP
• data model based on the world-wide recognized standards for public transport data exchange and rules for their management
• cooperation has several other downstream targets
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www.geoinformatics.upol.cz
Data model for public transport network management
• built on standard NeTEx – adapted for conditions applicable in the Czech Republic
• compatible with JDF • accounted the requirements of KIDSOK
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www.geoinformatics.upol.cz
• basic element - a stop as a point feature• position of the stop is calculated as a centroid of all signposts
• each stop must be identified by a unique multi-digit number from nationwide schedule information system (CIS ID) - e.g. No 24768 for Olomouc, tržnice
• each bus stop has CIS multi-digit number, position (using X and Y coordinates), name (consisting of the names of a city, city part and locality)
Entities in the data model – Stop
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www.geoinformatics.upol.cz
Entities in the data model – Boarding Edge
• linked to bus stop by CIS ID• is a border part of the platform, defined as a paved area allowing safe movement of passengers when boarding or leaving a vehicle
• length is routinely the same as the length of a platform, or at least the length of the longest vehicle
• each stop has at least two boarding edges (one for each direction)
• attributes – height, length, type, wheelchair accessibility, …
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www.geoinformatics.upol.cz
Entities in the data model – Stop Lane
• linked to the boarding edge and stop by ID• marked by two points (front and end positions) • length is routinely the same as the length of a boarding edge
• each boarding egde has at least one stop lane• attributes – information about existing of a bay or turning lane, length and depth of a bay, …
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www.geoinformatics.upol.cz
Entities in the data model – Signpost
• linked to the boarding edge and stop by ID• defined as a distinct upright marker designating bus, tram, trolleybus or other stop
• represented by a point (X, Y coordinates)• usually placed at the front part of a boarding edge • each boarding edge has at least one signpost • attributes – type of transport, design (post, console, frame), placement (solitary, shelter-mounted, wall-mounted etc.) and about its owner or administrator, …
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www.geoinformatics.upol.cz
Entities in the data model – other entities
• equipment of bus stop/boarding edge − shelters, concourses, waiting areas, benches, ticket machines etc.
• access space− underpass, overpass, space of stop , hall, etc.
• tariff zone
• parking
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Data collection and updating
• new mobile application for field data collection on the tablets with OS Android
• mobile application allows collection of data about stops, boarding edges, signposts, stop lanes and all spaces and objects related to boarding edge or stop
• application works offline, all data must be uploaded prior to the field mapping, and downloaded to a central data warehouse after completion of every mapping
• functions for recording positions of spatial elements, make photographic documentation, descriptive attributes
• data mostly entered through code lists (more than 25)
www.geoinformatics.upol.cz
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www.geoinformatics.upol.cz
Future work
• now mobile application currently installed on five tablets and final testing has been already conducted
• pilot field testing revealed that a time frame necessary to edit one stop - 15 minutes
• within IDS in Olomouc Region - more than 2500 unique stop names
• in the field data collection is involved department of Geoinformatics, in data collection or updating participate also other subjects
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THE DATA MODEL FOR DATA MANAGEMENT OF PUBLIC TRANSPORT
Thank you for your attention
Lenka ZAJÍČKOVÁ