presentation subtitle: 20pt arial regular, green r204 | g255 | b153 recommended maximum length: 2...
TRANSCRIPT
Computer Technology Institute, Greece
German Aerospace Institute, Germany
Vienna University of Technology, Austria
Emphasis Telematics, Greece
Geomatics, Greece
Greenway Systeme, Germany
WIGeoGIS, Austria
TALENT, 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