Improving operational safety and efficiency of variable speed limit (VSL) systems are the two core control objectives at work zone areas. In response to such need, this study presents a proactive VSL … [Read more...] about Optimal Variable Speed Limit Control System for Freeway Work Zone Operations
Measures of Effectiveness
Flagger Operations: Investigating Their Effectiveness in Capturing Driver Attention
This two-pronged (driving simulation and field study) investigation of driver behavior in work zones contributes basic and applied knowledge to our understanding of work zone safety. In the driving … [Read more...] about Flagger Operations: Investigating Their Effectiveness in Capturing Driver Attention
Effectiveness of VSL Signs in Reducing Crash Rates on Roadway Construction Work Zones in Alaska
As a driver's speed increases, so do the probability of an incident and likelihood of injury. The presence of equipment, personnel, and a changing landscape in construction zones create greater … [Read more...] about Effectiveness of VSL Signs in Reducing Crash Rates on Roadway Construction Work Zones in Alaska
A Smart Highway Work Zone Merge System Enabled by Connected Vehicles
Typical traffic control and operations at work zones usually are not very effective in mitigating the work zone bottleneck. A major reason is that the common early merge behaviors limits utilizing the … [Read more...] about A Smart Highway Work Zone Merge System Enabled by Connected Vehicles
Effectiveness of End-of-Queue Warning Systems and Portable Rumble Strips on Lane Closure Crashes
The Texas Department of Transportation has been deploying work zone intelligent transportation systems in an effort to reduce the number of work zone crashes along the Interstate 35 (I-35) corridor. … [Read more...] about Effectiveness of End-of-Queue Warning Systems and Portable Rumble Strips on Lane Closure Crashes
Evaluating the Effects of Queue Warning Systems on Freeway Work Zones Using Traffic Simulation Software
Work zones are a key component of the rehabilitation efforts that travelers on the U.S. national highway system interact with increasingly every day. Roadway construction, rehabilitation, and … [Read more...] about Evaluating the Effects of Queue Warning Systems on Freeway Work Zones Using Traffic Simulation Software