Direction-Based Freeway Traffic Flow Classification

This paper reports on research conducted to determine characteristics of traffic flow in Istanbul, Turkey. The study was undertaken to identify the current traffic conditions in Istanbul, examining traffic measurement parameters of occupancy, volume and speed. The traffic is categorized as one of three conditions: “Flow Traffic”, “Dense Traffic” and “Congested Traffic”. The authors propose a new method that assesses the traffic flow condition after consolidating lane based parameters to directional parameters. Multiple regression analysis based approaches are implemented and training data is obtained from the Corsim based microscopic traffic simulator TSIS 5.1. The proposed method is first modeled by using a training data set and then applied on real traffic data captured during one day from the seven sensors placed on Istanbul's 2nd Ring Road. The method is currently being used in the Traffic Management Center in Istanbul; when a congested level is detected, alarms are sounded to alert the traffic managers. After verification of the system's assessment, messages can be sent to variable message signs (VMS) to alert motorists about the road flow condition.


  • English

Media Info

  • Media Type: CD-ROM
  • Features: Figures; References; Tables;
  • Pagination: 12p
  • Monograph Title: ITS Connections: Saving Time. Saving Lives

Subject/Index Terms

Filing Info

  • Accession Number: 01140791
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Sep 16 2009 3:58PM