United States Department of Transportation
i
Bluetooth-based travel time/speed measuring systems development.
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2010-06-01
[PDF-4.96 MB]
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Alternative Title:Bluetooth®-based travel time/speed measuring systems development
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Edition:Final report; June 2009-May 2010.
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Abstract:Agencies in the Houston region have traditionally used toll tag readers to provide travel times on
freeways and High Occupancy Vehicle (HOV) lanes, but these systems require large amounts of costly and
physically invasive infrastructure. Bluetooth is a widely used technology embedded in cellular telephones and
in-vehicle applications for exchanging data over short distances. The initial demonstrations of wireless
address matching were primarily designed to prove the ability for Bluetooth technology to produce matches
between two points on a roadway outfitted with the proper Bluetooth reader equipment, with a resulting travel
time and speed calculated. Costs for Bluetooth travel time measurement systems are one to two orders of
magnitude below costs for traditional toll tag reader equipment, depending on the application. This cost
advantage could significantly lower the threshold for hundreds of agencies and private entities to enter the
travel time measurement market, but there is little guidance on the application. Development and testing of
various prototype software and hardware platforms were conducted to use the anonymous Media Access
Control (MAC) address from each Bluetooth device to measure and report real-time traffic conditions.
Several issues were examined and resolved in order to develop a true first generation “product.” The
development of this method and process is pending patent approval.
17. Key
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