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
Variable Speed Limit Systems
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
Variable Speed Limit Signs: Control and Setting Locations in Freeway Work Zones
Variable Speed Limit Sign (VSLS) Systems enable speed limits to be changed dynamically in response to traffic conditions so that traffic incidents can be reduced significantly on freeway work zones. … [Read more...] about Variable Speed Limit Signs: Control and Setting Locations in Freeway Work Zones
Best Practices for Maximizing Driver Attention to Work Zone Warning Signs
Studies have shown that rear-end crashes in the advance warning area for a work zone are the most common type of work zone crashes. Driver inattention (or distraction) is reported as the most common … [Read more...] about Best Practices for Maximizing Driver Attention to Work Zone Warning Signs