The nighttime driving environment, consisting of roadway illumination, signs, vehicle lighting and markers, delineators and flashing lights, can be complex or even confusing for both pedestrians and … [Read more...] about Nighttime Highway Construction Illumination
Visibility
Configuring Retroreflective Markings to Enhance the Night-Time Conspicuity of Road Workers
This study investigated whether the night-time conspicuity of road workers can be enhanced by positioning retroreflective strips on the moveable joints in patterns that convey varying degrees of … [Read more...] about Configuring Retroreflective Markings to Enhance the Night-Time Conspicuity of Road Workers
Can You See Me Now? Visibility in Work Zones at Night
37 percent of work zone fatalities occur at night. While it is important to have traffic control devices to properly warn motorists, it is also important for workers to be visible. This article … [Read more...] about Can You See Me Now? Visibility in Work Zones at Night
Impact of Work Zone Lighting on Driver’s Detection of Objects
Researchers conducted a closed-course study to evaluate the impact of work zone lighting upon the ability of drivers to detect low contrast objects and workers wearing high-visibility vests. Three … [Read more...] about Impact of Work Zone Lighting on Driver’s Detection of Objects
Work Zone Lighting and Visual Performance: Analysis and Demonstration
In part because of the potential for high levels of glare from work zone illumination, recommendations for light levels from work zone illumination systems are substantially higher than for levels … [Read more...] about Work Zone Lighting and Visual Performance: Analysis and Demonstration
Construction Advisory: Worker Visibility
In 2006, the Federal Highway Administration (FHWA) issued 23 CFR, Part 634, Worker Visibility Final Rule, which required that, “All workers within the right-of-way of a Federal-aid highway who are … [Read more...] about Construction Advisory: Worker Visibility