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
Variable Speed Limit Systems
Optimal Variable Speed Limit Control under Connected Work Zone and Connected Vehicle Environment
Despite the long-term benefits gained through road maintenance projects, the work zone involved can cause serious traffic congestion and greatly increase traffic delay. Variable speed limit (VSL) … [Read more...] about Optimal Variable Speed Limit Control under Connected Work Zone and Connected Vehicle Environment
Variable Speed Limit Control for Delay and Crash Reductions at Freeway Work Zone Area
Improving operational efficiency and safety on freeway segments has long been recognized as a priority in traffic communities. This study presents a comprehensive variable speed limit (VSL) control … [Read more...] about Variable Speed Limit Control for Delay and Crash Reductions at Freeway Work Zone Area
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
Speed Signage Goes Electric in Two Area Work Zones
Variable speeds have been used in other states, but the signs are new to Ohio. Two northwest Ohio work zones are the region's first to use electronic signs with changeable speed-limit numbers. … [Read more...] about Speed Signage Goes Electric in Two Area Work Zones
Synthesis of Variable Speed Limit Signs
Variable speed limit (VSL) systems utilize information on traffic speed, occupancy, and volume detection, weather, and road surface conditions to determine the appropriate speeds at which drivers … [Read more...] about Synthesis of Variable Speed Limit Signs