Real-Time Fusion of UK Traffic Data

In the United Kingdom, traffic information is gathered and supplied by both the commercial and public sectors. This paper describes the Intelligent Data Fusion Tool (IDFT), a project that is part of a Highways Agency evaluation of the benefits that commercially-gathered traffic information might bring to the management of the English National Motorway network. The IDFT gathers traffic information from both commercial and public sources and fuses them into a single information stream. For example, alerts from MIDAS, the Highways Agency system for incident detection in the UK, offer high resolution in terms of incident locations and timings, which is very helpful to determine the seed points of incidents. MIDAS alerts are then grouped with other information to create Master Alerts. The IDFT project utilizes DATEX II as the traffic data model for the project. The merging algorithm addresses four key aspects of incident information including: Confirmation, Description, Impact and Clearance. These aspects are addressed by introducing specific rules and mechanisms to enable the merging of events. The authors report on two evaluation trials were held with Highways Agency operators in January and February 2008 and independently assessed. The initial trial revealed that the IDFT operator interface responsiveness was not sufficient to be used in a live operational environment. After a period of system enhancement and performance improvement a second live operation trial was held. Following the analysis of these live trials and a theoretical evaluation, at present, the Highways Agency is not pursuing a strategy of fusing real time traffic data. However, following the trials, the Highways Agency is considering using appropriate data from a single supplier in a format which can be more readily utilized in a control room environment. The authors conclude, however, that this IDFT evaluation of data fusion has demonstrated that ‘high level’ fusion of traffic information in to a single unified data stream is both possible and practical.

Language

  • English

Media Info

  • Media Type: CD-ROM
  • Features: Figures; References; Tables;
  • Pagination: 11p
  • Monograph Title: ITS Connections: Saving Time. Saving Lives

Subject/Index Terms

Filing Info

  • Accession Number: 01142574
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Oct 24 2009 7:07AM