Made to Measure: Bluetooth Revolutionized Communications When It Was Launched in 1998

This article describes research activities at the University of Maryland and Purdue University that have produced a new technology that can accurately measure travel times on freeways and arterials. Using Bluetooth communications, the new technology’s accuracy exceeds that of floating cars. A new organization called Traffax Inc. will produce, support and sell the new Bluetooth equipment. The author explains how the Bluetooth technology calculates travel times, how it will be packaged, and the results of freeway tests in locations throughout the US and Australia. The most extensive deployment was used to validate GPS-based vehicle probe data procured by the I-95 Corridor Coalition from Inrix in connection with its six-state-vehicle-probe project. The equipment performed without fault and provided reliable travel time measures. The author also describes arterial test results.


  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 01145350
  • Record Type: Publication
  • Source Agency: UC Berkeley Transportation Library
  • Files: BTRIS, TRIS
  • Created Date: Nov 23 2009 5:18PM