Challenges to Effective Arterial Traffic Monitoring: Lessons from the I-95 Corridor Coalition’s Vehicle Probe Project

Methods to effectively monitor arterial traffic have commanded center stage as new tools and technologies such as vehicle probe data and Bluetooth TM traffic monitoring have emerged to cost-effectively provide accurate, real-time, continuous, network-wide monitoring of freeway systems. Within metropolitan areas, the network of high-volume, multi-lane arterials is critical to the daily movement of commuters to jobs and services, to distribute freeway traffic to local streets, and to provide diversion routes during major incidents. Many of the same technologies that have revolutionized freeway traffic monitoring promise to do the same for signal-controlled arterials. However, initial demonstrations and implementations reveal a variety of issues, many of which are inherent to the fundamental nature of traffic flow that differentiates arterials from freeways. The I-95 Corridor Coalition’s Vehicle Probe Project (VPP) has successfully delivered high quality freeway travel time data on a roadway network comprised of over 5,000 centerline miles since its inception in 2008. The project also includes a component consisting of approximately 900 miles of arterials that link the major freeways and provide diversion routes in the event of incidents. The validation program that monitors data quality for freeways also collects data samples on the arterial network. This paper characterizes the critical challenges in providing quality traffic data on arterials based on data collected as part of the I-95 VPP and through interaction of a committee of transportation professionals that provide guidance to the project. The findings from the I-95 VPP are germane to any probe-based arterial traffic monitoring system.


  • English

Media Info

  • Media Type: Digital/other
  • Features: Figures; Maps; Tables;
  • Pagination: 13p
  • Monograph Title: 18th ITS World Congress, Orlando, 2011. Proceedings

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Filing Info

  • Accession Number: 01484819
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 23 2013 9:53AM