Modeling Merging Behavior at Lane Drops, InTrans Projects 13-466 and 06-277, 2015

(2015) Modeling Merging Behavior at Lane Drops, InTrans Projects 13-466 and 06-277, 2015. Transportation, Department of


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In work-zone configurations where lane drops are present, merging of traffic at the taper presents an operational concern. In addition, as flow through the work zone is reduced, the relative traffic safety of the work zone is also reduced. Improving work-zone flow-through merge points depends on the behavior of individual drivers. By better understanding driver behavior, traffic control plans, work zone policies, and countermeasures can be better targeted to reinforce desirable lane closure merging behavior, leading to both improved safety and work-zone capacity. The researchers collected data for two work-zone scenarios that included lane drops with one scenario on the Interstate and the other on an urban arterial roadway. The researchers then modeled and calibrated these scenarios in VISSIM using real-world speeds, travel times, queue lengths, and merging behaviors (percentage of vehicles merging upstream and near the merge point). Once built and calibrated, the researchers modeled strategies for various countermeasures in the two work zones. The models were then used to test and evaluate how various merging strategies affect safety and operations at the merge areas in these two work zones.

Item Type: Departmental Report
Keywords: Behavior, Countermeasures, Drivers, Merging control, Traffic control, Traffic flow, Work zone safety, Work zones, driver behavior; microsimulation model; traffic operations; traffic safety measures; Vissim modeling; work-zone capacity; work-zone flow-through; work-zone lane drops; work-zone merging
Subjects: Transportation
Transportation > Traffic Management
Transportation > Motor vehicles
Transportation > Traffic safety
Transportation > Traffic safety > Work zones
Transportation > Data and Information Technology
ID Code: 19043
Deposited By: Iowa DOT Library
Deposited On: 12 Mar 2015 16:43
Last Modified: 25 Mar 2015 17:41