Integrating intersection traffic signal data into a traffic monitoring program.
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2014-09-01
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Abstract:The objective of this study was to provide the Georgia Department of Transportation with
an evaluation of the feasibility of integrating intersection traffic signal data into a traffic
monitoring program. Some of the pertinent conclusions from this study are:
• Accuracy of 15-minute aggregates of vehicle counts is above 90% at a 95% level
of confidence at majority of the study sites
• Data quality at some intersections are affected by insufficient offset of the
detection zone from the stop bar, leading to queuing of vehicles over the detector
and resulting in over-counting of vehicles
• Data from intersections using video based detection are of comparable quality as
other intersections using inductive loop detectors
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