Feasibility study for using video detection system data to supplement automatic traffic recorder data.
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2013-12-01
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Abstract:The objective of this study was to determine the feasibility of incorporating Georgia NaviGAtor ; traffic volume data with Georgia Department of Transportation (GDOT) traffic volume data to ; enhance federal reporting. Some of the pertinent conclusions from this study are: ; 1. Accuracy of video detection system (VDS) counts varied from site to site and lane to lane. ; 2. Accuracy for VDS with gantry-mounted cameras was not significantly better than that of ; pole-mounted VDS sites. ; 3. Accuracy of VDS sites with cameras mounted on 36 ft. offset poles was marginally lower ; than units with cameras mounted on 24 ft. offset poles. ; 4. Accuracy of counts from VDSs and remote traffic microwave sensors (RTMSs) is sensitive to site-specific deployment characteristics. ; 5. There is a likely limit to the number of lanes that may be accurately counted by a single ; VDS unit. ; 6. Counts aggregated over all lanes provide the highest accuracy. ; 7. Given the variability in data quality across detection stations, the use of VDS data to supplement GDOT data should be considered on a detector-by-detector basis (i.e. the data ; from a detector need to be individually checked for quality against ground truth data before they are used for federal reporting purposes).
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Main Document Checksum:urn:sha-512:316a8ef1308aaa40b29896e53e030c77c0a40ef0741c0dfd413d0c2a66f7de9503ba7da9443ed6fe31c291aa0da086c17a7af60742a5b9e2543509336fbae881