Queue warning systems (QWSs) have been implemented to increase traffic safety by informing drivers about queued traffic ahead so that they can react in a timely manner to the queue. Existing QWSs rely … [Read more...] about Safety Impacts of Queue Warning in a Connected Vehicle Environment
Traffic Queuing
Evaluation of Variable Advisory Speed Limits in Congested Work Zones
The effectiveness of variable “advisory” speed limit (VASL) systems in congested urban work zones was investigated. Except for one publication, all previous studies focused on regulatory speed limit … [Read more...] about Evaluation of Variable Advisory Speed Limits in Congested Work Zones
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
South Dakota Department of Transportation Uses New Technology in Construction Project Near Sioux Falls
South Dakota Department of Transportation is using an advance queue detection system on an I-29 project to warn drivers of the construction zone. This technology is still new to South Dakota with … [Read more...] about South Dakota Department of Transportation Uses New Technology in Construction Project Near Sioux Falls
Work Zone Impact Assessment Methods and Applications
Two work zone impact assessment methods were developed and their applicability was illustrated with data from recent construction projects on the I-35 Central Texas corridor. The first method was … [Read more...] about Work Zone Impact Assessment Methods and Applications