Computer Technology Institute, Greece German Aerospace Institute, Germany
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Transcript of Computer Technology Institute, Greece German Aerospace Institute, Germany
Computer Technology Institute, GreeceGerman Aerospace Institute, GermanyVienna University of Technology, AustriaEmphasis Telematics, GreeceGeomatics, GreeceGreenway Systeme, GermanyWIGeoGIS, AustriaTALENT, Greece
http://www.trackandtrade.orga co-operative research project funded by the European Commission
TRACK&TRADE Web presentation
Project OverviewSlide 2 of 12
Motivation Use of Floating Car Data (FCD) to assess
“traffic” Floating car data?
– basic vehicle telemetry, e.g., speed, direction, ABS use– the position of the vehicle ( tracking data)– GPS tracking
Traffic assessment– data from one vehicle as a sample to assess overall
traffic conditions – cork swimming in the river – large amounts of tracking data (e.g., taxis, public transport,
utility vehicles, private vehicles) accurate picture of the traffic conditions
– >>>cheap data source<<<
TRACK&TRADE Web presentation
Project OverviewSlide 3 of 12
Motivation Travel time fluctuation in
road network Live assessment
– deriving travel times from FCD (tracking data)
– one vehicle one route
– many vehicles (good) coverage of the entire road network
Historic data– collections of FCD to derive
trends
– complement live data
TRACK&TRADE Web presentation
Project OverviewSlide 4 of 12
The Project Goal
To build a Web-based platform that
1) enables “people” to contribute their “tracking” data in the “simplest” possible way and
2) based on the collected tracking data, provides basic, value-added services (API) serving as building blocks for rich(er) services.
TRACK&TRADE Web presentation
Project OverviewSlide 5 of 12
System Overview
Public data collection and dissemination site
Web services Data collection Data dissemination
– travel time maps– travel time assessment– travel time prediction– building blocks for
richer applications/services
TRACK&TRADE Web presentation
Project OverviewSlide 6 of 12
Data Scenario GPS vehicle tracking data
– large variety of vehicles– vehicle fleets, e.g., taxis, school buses,
delivery trucks, – indiv. vehicles
Real-time data – Berlin, Vienna, and Athens
Berlin Vienna Athens
TRACK&TRADE Web presentation
Project OverviewSlide 7 of 12
Data Scenario
Definition of a data model for FCD (tracking data)
– rely on existing standards (KML, geoRSS)
Creation of a data collection service for FCD– key aspect – simple set up for adding new FCD source to data
mart
– analysis of data provider expectations – encryption, type of connection
TRACK&TRADE Web presentation
Project OverviewSlide 8 of 12
Data Pre-Processing
Map-matching algorithms– relating the GPS vehicle tracking data (FCD) to
road network
– compensates for measurement (GPS) and sampling error (30s) in the tracking data
TRACK&TRADE Web presentation
Project OverviewSlide 9 of 12
Data Management
Computing link-based travel times– derivation of current and future travel times from collected
– current and– historic travel time data
From route-based to road-based travel times– “distributing” travel times from routes (tracking data)
to links in the road network
Inhomogeneous FCD problem– different types of vehicles producing data
– making travel time data comparable
TRACK&TRADE Web presentation
Project OverviewSlide 10 of 12
Services
FCD collection service– simplest possible way for new data providers to connect to the
data mart
Value-added services to provide elementary building blocks of rich(er) services (API)
– Travel time maps – visualization of travel time conditions
– Travel-time assessment and prediction service - given a road network and time horizon provide (expected) travel times
Evaluation– integration with existing services – fleet management, routing,
traffic-light switching
TRACK&TRADE Web presentation
Project OverviewSlide 11 of 12
Platform
Integrating data management and servicesinto a single platform
Web+Map interface based on the Cruiser platform
TRACK&TRADE Web presentation
Project OverviewSlide 12 of 12
Contact
Dieter PfoserRA Computer Technology InstituteDavaki 10GR-11526 Ampelokipoi, AthensGreece
Phone: +30-210.6930.700Fax: +30-210.6930.750email: pfoser.cti.gr Web: www.trackandtrade.org