GPS Vs. Wireless Probe-Based Systems For Real-Time Road Traffic Monitoring And Traveler Information

This paper compares the advantages and limitations of two methods, GPS and wireless probe based systems, used for real time road traffic monitoring and traveler information. The authors base their comparison on field trials and simulations, including those in Atlanta (Georgia, United States), Kansas City (Missouri, United States), and in the Skane Region of Sweden. Their study shows that GPS data can be very useful for collecting historical information with relatively low cost. However GPS data isn’t relevant for real-time traffic information, since it usually entails hours of delay in detecting slowdowns, even over major urban highways. Other drawbacks to GPS methods include low sampling rate, costs of collecting the data, and anomalies ascribed to fleet vehicle driving patterns. A wireless based solution can generate very good real-time data but cannot provide accurate volume counts, only estimates of the volume. In addition, during late night hours (11pm to 6am) the quantity of wireless data is too low to generate proper real time detection. However, the authors conclude that wireless-based monitoring solutions are the only viable solution at present for real time traffic data collection.


  • English

Media Info

  • Media Type: CD-ROM
  • Pagination: 4p
  • Monograph Title: ITS Connections: Saving Time. Saving Lives

Subject/Index Terms

Filing Info

  • Accession Number: 01142483
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Oct 12 2009 11:27AM