In addition to closed merge lanes as physical bottlenecks of work zones, traffic oscillations caused by merging vehicles at multiple locations could reduce work zone capacity. This study took a … [Read more...] about Merging Vehicles and Lane Speed-Flow Relationship in a Work Zone
Traffic Speed
Iowa Work Zones are Getting Smarter
Intelligent Transportation Systems (ITS) tools including traffic sensors and cameras are deployed in 28 state highway work zones in Iowa. Those tools sent data on traffic speed, queue length, and … [Read more...] about Iowa Work Zones are Getting Smarter
Predicting Traffic Dynamics with Driver Response Model for Proactive Variable Speed Limit Control Algorithm
Variable Speed Limit (VSL) control contributes to potential crash risk reduction by suggesting a suitable dynamic speed limit to achieve more stable and uniform traffic flow. In recent studies, … [Read more...] about Predicting Traffic Dynamics with Driver Response Model for Proactive Variable Speed Limit Control Algorithm
Traffic Flow Modeling of Diverse Work Zone Activities
What effect does work activity type have on traffic conditions in a work zone? This question has still not been answered satisfactorily in practice. Without knowing the true effect a work activity has … [Read more...] about Traffic Flow Modeling of Diverse Work Zone Activities
Micro-Level Analysis on Traffic Flow Parameters at Work-Zone Road Section Using Vehicular Trajectory Data
The research work is carried out to examine microscopic and macroscopic traffic parameters at work zone on high speed urban roads. Due to construction of elevated metro rail project over the study … [Read more...] about Micro-Level Analysis on Traffic Flow Parameters at Work-Zone Road Section Using Vehicular Trajectory Data
Work Zone Free Flow Speed Calculation Issues in HCM 2016
Capacity and free flow speed (FFS) are the two most important traffic characteristics that determine traffic flow conditions in work zones. Work zone capacity and FFS are also important because they … [Read more...] about Work Zone Free Flow Speed Calculation Issues in HCM 2016