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Data fusion for traffic flow estimation at intersections

Wolfermann, Axel and Mehran, Babak and Kuwahara, Masao (2011) Data fusion for traffic flow estimation at intersections. 2nd International Workshop on Traffic Data Collection & its Standardisation, 22.-23. September 2011, Brisbane, Australien.

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Official URL: http://www.trafficdata.info/iwtdcs

Abstract

The efficient design and operation of intersections, particularly signalized intersections, depends on the availability of detailed traffic flow data. Information on the turning ratio and lane occupation is, however, commonly scarce or unreliable. Combining Floating Car Data (FCD) with other data sources offers the opportunity to fill this gap. As opposed to existing data fusion concepts, detector data is not directly used to deliver information on the traffic flow on a specific link, but it is evaluated in connection with the FCD to estimate the penetration rate of the traffic with probe vehicles. This information is combined with historic data and information contained in network connections. The data fusion itself is achieved by using a Kalman Filter (KF). By using FCD, the output of the data fusion process is up to date and can be used to take incidents and other fluctuations of traffic volumes into account. The elasticity of the filter to different input reliabilities and flow variations is shown. The concept works well and promises to be a useful tool for cities with sufficient FCD available. The performance depends in the first place on a good calibration, which can be achieved by extensive tests based on simulations and based on manual counts as part of an implementation.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:Data fusion for traffic flow estimation at intersections
Authors:
AuthorsInstitution or Email of Authors
Wolfermann, AxelDeutsches Zentrum für Luft- und Raumfahrt e. V. (German Aerospace Center)
Mehran, BabakThe University of Tokyo, Institute of Industrial Science
Kuwahara, MasaoTohoku University, Graduate School for Information Sciences
Date:22 September 2011
Refereed publication:Yes
In ISI Web of Science:No
Status:Published
Keywords:data fusion, floating car data, kalman filter, detector data, traffic flow, intersection
Event Title:2nd International Workshop on Traffic Data Collection & its Standardisation
Event Location:Brisbane, Australien
Event Type:international Conference, Workshop
Event Dates:22.-23. September 2011
Organizer:Queensland University of Technology, Smart Transport Research Centre
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:other
DLR - Research area:Transport
DLR - Program:V - no assignement
DLR - Research theme (Project):V -- no assignement
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Transport Research
Deposited By: Dr.-Ing. Axel Wolfermann
Deposited On:19 Jan 2012 09:02
Last Modified:12 Dec 2013 21:34

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