Real-Time Travel Time Estimates Using Media Access Control Address Matching

Travel time is one of the oldest performance measures used to characterize an arterial or freeway system. The first direct measurement of travel time was based upon license-plate matching techniques in vehicle notes, mechanical devices attached to odometers, or global positioning system (GPS) record...

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Bibliographic Details
Published in:ITE journal 2008-06, Vol.78 (6), p.20-23
Main Authors: Wasson, Jason S, Sturdevant, James R, Bullock, Darcy M
Format: Article
Language:English
Subjects:
Access control
Consumer electronics
Global positioning systems
GPS
Local area networks
Measurement techniques
Real time
Speed limits
Tolls
Travel
Trends
Vehicles
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Summary:Travel time is one of the oldest performance measures used to characterize an arterial or freeway system. The first direct measurement of travel time was based upon license-plate matching techniques in vehicle notes, mechanical devices attached to odometers, or global positioning system (GPS) recording devices. More recently, cell phone and toll tag tracking have been proposed as a mechanism for collecting probe-vehicle link travel times. A variety of statistical techniques have been published that document techniques for estimating sample size or sample proportion necessary for reliably estimating travel time. This article reports on the use of a prototype system to sniff and time-stamp wireless media access control (MAC) addresses at selected sample locations. Because each MAC address is unique, traditional matching algorithms analogous to those used for license plate, cellular, or toll tag tracking can be used to estimate travel time along a freeway or arterial.
ISSN:0162-8178