Due to the difference of vehicle type and power performance between large vehicles and cars, large vehicle mix rate will have an important impact on traffic flow of work zone and lead to the decrease … [Read more...] about Variable Speed Limit Control on Highway Work Zone Considering Large Vehicle Mix Rates
Variable Speed Limit Systems
Implementing Speed Reductions at Specific Interstate Workzones from 65 MPH to 35 MPH
Interstate preservation projects are commonly conducted at night and often require working in close proximity to ongoing traffic. Vehicle speed and speed variability in work zones is inextricably … [Read more...] about Implementing Speed Reductions at Specific Interstate Workzones from 65 MPH to 35 MPH
Evaluation of Innovative Traffic Safety Devices at Short-Term Work Zones
The objective of this study was to investigate and evaluate the usage and effectiveness of innovative traffic control devices that can be used in short-term work zones. Any device to be used in … [Read more...] about Evaluation of Innovative Traffic Safety Devices at Short-Term Work Zones
Radar Speed Signs
Work Zone Speed Reduction Utilizing Dynamic Speed Signs
A simulator study was used in this research to determine speed compliance based upon dynamic speed design and presence. The scenarios designed for this research simulated driving through a highway … [Read more...] about Work Zone Speed Reduction Utilizing Dynamic Speed Signs
Evaluation of the Effectiveness of a Variable Advisory Speed System on Queue Mitigation in Work Zones
Variable Advisory Speed Systems (VASS) provide drivers with advanced warning regarding traffic speeds downstream to help them make better decisions. Vehicle use on highways is increasing and the need … [Read more...] about Evaluation of the Effectiveness of a Variable Advisory Speed System on Queue Mitigation in Work Zones