Most State and many other transportation departments in the U.S. maintain roadway and/or work zone design manuals containing State specific regulations, policies, and design guidance for their … [Read more...] about Work Zone Designer Series – Work Zone Analysis in the Design Process
Traffic Speed
Verification and Efficacy of Automated Queue Detection Systems on Interstate Intelligent Work Zones
Intelligent work zones have been widely adopted in the United States because they have been proven to improve traffic safety and operations. One specific intelligent work zone system, known as … [Read more...] about Verification and Efficacy of Automated Queue Detection Systems on Interstate Intelligent Work Zones
Applying Clustered KNN Algorithm for Short-Term Travel Speed Prediction and Reduced Speed Detection on Urban Arterial Road Work Zones
This study developed and verified a travel speed prediction model based on the travel speed and work zone statistics collected from the advanced traffic management system (ATMS) real-time data in … [Read more...] about Applying Clustered KNN Algorithm for Short-Term Travel Speed Prediction and Reduced Speed Detection on Urban Arterial Road Work Zones
Issues With Work Zone Free Flow Speed Computation in 6th Edition HCM and Proposed Improvements
Free flow speed (FFS) and capacity of work zones (WZ) directly affect queue length and delay in the WZ. The 6th Edition of Highway Capacity Manual introduced a new model to estimate WZ FFS and … [Read more...] about Issues With Work Zone Free Flow Speed Computation in 6th Edition HCM and Proposed Improvements
Safety Impact of Connected Vehicles on Driver Behavior in Rural Work Zones Under Foggy Weather Conditions
Work zone (WZ) safety is one of the paramount goals of the safety community. Safety in WZs is a particular concern under foggy conditions as they represent an exogenous factor contributing to high … [Read more...] about Safety Impact of Connected Vehicles on Driver Behavior in Rural Work Zones Under Foggy Weather Conditions
Using Connected Vehicle Trajectory Data to Evaluate the Impact of Automated Work Zone Speed Enforcement
Work zone safety is a high priority for transportation agencies across the United States. Enforcing speed compliance in work zones is an important factor for reducing the frequency and severity of … [Read more...] about Using Connected Vehicle Trajectory Data to Evaluate the Impact of Automated Work Zone Speed Enforcement