Concurrent flow lanes - phase III.
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2011-01-01
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NTL Classification:NTL-HIGHWAY/ROAD TRANSPORTATION-HIGHWAY/ROAD TRANSPORTATION;NTL-OPERATIONS AND TRAFFIC CONTROLS-Traffic Flow;NTL-PLANNING AND POLICY-PLANNING AND POLICY;
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Abstract:This report describes efforts taken to develop and calibrate VISSIM models of existing
concurrent flow lane designs of north- and southbound lanes of I-270 from the interchange at
I-70 to interchanges on I-495 at Connecticut Avenue in Maryland and Georgetown Pike in
Virginia. The report describes the data employed within the modeling and calibration efforts,
including the input data and the data used for calibration. Efforts taken to calibrate and
evaluate the existing conditions models are presented. The models were calibrated against
surveyed segment travel times and evaluated against main lane volumes and segment
densities. Results of the calibration and post-calibration evaluation confirm VISSIM's ability
to replicate real-world traffic operations along freeways with concurrent flow lanes.
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