Wireless Data Collection System for Real-Time Arterial Travel Time Estimates

This project pursued several objectives conducive to the implementation and testing of a Bluetooth (BT) based system to collect travel time data, including the deployment of a BT-based travel time data collection system to perform comprehensive testing on all the components. Two different BT-based travel time data collection systems were installed. The first system, composed of two DCUs, was installed on a corridor located in Salem, OR. Extensive testing was done on this system, including the collection of travel time samples. A second system composed of five DCUs was installed along 99W in the city of Tigard, OR. Very limited data collection was done on 99W due to the lack of network connectivity. Six different antenna types were characterized using the two DCU BT-based travel time data collection system. The result of the antenna characterization tests showed that vertically polarized antennas with gains between 9 and 12 dBi are good candidates to support a BT-based travel time data collection system. Antennas with circular polarization do not seem to improve the performance, despite the lack of control regarding the orientation of BT-enabled devices in most applications. Travel time samples were also collected with this system. The results indicate that a trade-off exist between the number of samples obtained and the accuracy of these travel time samples. This trade-off is most likely the result of differences in road coverage areas provided by the different antenna types.

• Record URL:
  http://ppms.trec.pdx.edu/media/project_files/OTREC-RR-10-16%20ODOT%20Final%20Report.pdf
• 
• Summary URL:
  http://nitc.trec.pdx.edu/research/project/326
• Record URL:
  https://rosap.ntl.bts.gov/view/dot/18693
• Supplemental Notes:
  • This document is disseminated under the sponsorship of the U.S. Department of Transportation University Transportation Centers Program and Oregon Department of Transportation.
• Corporate Authors:

  Oregon State University, Corvallis

  Corvallis, OR  United States  97331

  Oregon Department of Transportation

  Research Section, 200 Hawthorne Avenue, SE, Suite B-240
  Salem, OR  United States  97301-5192

  Oregon Transportation Research and Education Consortium

  P.O. Box 751
  301A Engineering Building
  Portland, OR  United States  97207

  Research and Innovative Technology Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Porter, J David
  • Kim, David S
  • Magana, Mario E
• Publication Date: 2011-3

Language

• English

Media Info

• Media Type: Print
• Edition: Final Report
• Features: Appendices; Figures; References; Tables;
• Pagination: 149p

Subject/Index Terms

• TRT Terms: Arterial highways; Bluetooth technology; Data collection; Real time information; Travel time; Wireless communication systems
• Subject Areas: Data and Information Technology; Highways;

Filing Info

• Accession Number: 01340403
• Record Type: Publication
• Report/Paper Numbers: OR-RD-11-10, OTREC 10-16
• Contract Numbers: OTREC 10-16 / SPR 500-410
• Files: UTC, NTL, TRIS, ATRI, USDOT, STATEDOT
• Created Date: May 18 2011 1:23PM