Automated traffic data being posted on the Internet by an increasing number of cities are a potentially invaluable source of information on national vehicle travel and highway system performance. An experimental system is presented that demonstrates the feasibility of using these data to create national indicators of vehicle travel and traffic congestion. The experiment raises a number of critical institutional and technical issues that must be resolved before a complete national system can be realized. This paper represents a progress report on the initial phase of an ongoing study.
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DaileyD. J., HaselkornM. P., and MeyersD.. A Structured Approach to Developing Real-Time Distributed Network Applications for ITS Deployment. Department of Electrical Engineering, University of Washington, Seattle1998. www.ivhs.washington.edu/bbone.
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Highway Statistics 1996. FHWA-PL-98-003, Office of Highway Information Management, FHWA, U.S. Department of Transportation, Nov.1997.
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SchrankD. L., and LomaxT. J.. Urban Roadway Congestion—1982—1993, Vol. 2: Methodology and Urbanized Area Data. TTI: 0-1131. Texas Transportation Institute, College Station, Aug.1996.
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LomaxT., TurnerS., ShunkG., LevinsonH. S., PrattR. H., BayP. N., and DouglasG. B.. NCHRP Report 398: Quantifying Congestion. TRB, National Research Council, Washington, D.C., 1997.
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DaileyD. J.A Statistical Algorithm for Estimating Speed from Single Loop Volume and Occupancy Measurements. Department of Electrical Engineering, University of Washington, Seattle, 1996.
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MargiottaR.ITS as a Data Resource. Office of Highway Information Management, FHWA, U.S. Department of Transportation, April1998. www.fhwa.dot.gov/ohim/its/itspage.htm.
