This project evaluated current nighttime work zone lighting practices for limited-access highways and primary routes in Virginia through (1) an on-site evaluation of lighting levels in work zones; (2) … [Read more...] about Examination of the Current Practice of Lighting in Virginia: Nighttime Work Zones and Improving Safety Through the Development of Nighttime Lighting Specifications
Visibility
MDOT Raises the Bar on Work Zone Visibility
Night time visibility in work zones can be challenging, particularly in the rain. The Michigan Department of Transportation set new guidelines and standards for work zones throughout the state to … [Read more...] about MDOT Raises the Bar on Work Zone Visibility
Impacts of Fog Characteristics, Forward Illumination, and Warning Beacon Intensity Distribution on Roadway Hazard Visibility
Warning beacons are critical for the safety of transportation, construction, and utility workers. These devices need to produce sufficient luminous intensity to be visible without creating glare to … [Read more...] about Impacts of Fog Characteristics, Forward Illumination, and Warning Beacon Intensity Distribution on Roadway Hazard Visibility
Assessment of Drivers’ Visual Perception of Information Displayed in LED Traffic Signs at Road Construction Sites
This study investigated drivers' visual perception of information displayed in LED traffic signs under different levels of environmental luminance. Concerning the information displayed, the … [Read more...] about Assessment of Drivers’ Visual Perception of Information Displayed in LED Traffic Signs at Road Construction Sites
Effect of Work Zone Lighting on Drivers’ Visual Performance and Perceptions of Glare
Nighttime crashes at work zones are major concerns for construction workers and motorists. Although in a majority of the U.S. states, department of transportation specifications for work zone lighting … [Read more...] about Effect of Work Zone Lighting on Drivers’ Visual Performance and Perceptions of Glare
Toward Modeling the Effect of Vertical Illuminance on Perceived Glare in Work Zones
In the United States, in most of the states, glare from the portable light towers in the work zones is evaluated subjectively. Subjective evaluation of glare usually has the inherent bias of the … [Read more...] about Toward Modeling the Effect of Vertical Illuminance on Perceived Glare in Work Zones