Computerized Traffic Data Acquisition System, Updated

Report No: 80-R26

Published in 1980

About the report:

Although the parameters that characterize traffic flow have been established nationally for several years, it is only recently that technology has made accurate measurement of them economically feasible. This report describes a system that provides accurate measurement of great quantities of traffic flow data at a low cost by employing digital electronics for measurement and computer processes for analysis. The system described is an improved version of one placed in operation in 1977. For traffic flow data acquisition this revised system requires a minimum of two and a maximum of three axle detectors per lane and is capable of recording data from as many as 30 axle detectors pseudo-simultaneously. A maximum of five sites can be specified with up to four lanes per site. Special circuitry was added to allow each of the detectors to be monitored during data collection. Based on experience with this system and technological advances made since this system was designed, a recommendation for future improvements is made.

Disclaimer Statement:The contents of this report reflect the views of the author(s), who is responsible for the facts and the accuracy of the data presented herein. The contents do not necessarily reflect the official views or policies of the Virginia Department of Transportation, the Commonwealth Transportation Board, or the Federal Highway Administration. This report does not constitute a standard, specification, or regulation. Any inclusion of manufacturer names, trade names, or trademarks is for identification purposes only and is not to be considered an endorsement.


  • Jerry L. Korf

Last updated: January 24, 2024

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