Computerized traffic data acquisition system, updated.
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Computerized traffic data acquisition system, updated.

  • 1980

Filetype[PDF-3.38 MB]

  • English

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    • Abstract:
      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.
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