Resource Type: Books, Reports, Papers, and Research Articles
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 d…MoreVisibility
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RSP+ Night Work Flagging Toolbox Pamphlet (Publication)
Resource Type: Brochures and Fact Sheets
The Night Work Flagging pamphlet explains how night flagging differs from daytime flagging and shows night flagging applications. It includes proper illumination of a flagger.
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Nig…MoreRSP+ Night Work High Visibility Toolbox Pamphlet (Publication)
Resource Type: Brochures and Fact Sheets
The Night Work High Visibility pamphlet defines the characteristics of 'high visibility' and details ANSI requirements for Class 1, 2 and 3 garments. It includes garment inspection and vehicle visibil…MoreRSP+ Night Work Trainee Booklet (Publication)
Resource Type: Brochures and Fact Sheets
The booklet first explains why night work requires special focus and then presents the hazards, nighttime TTC (Temporary Traffic Control), safety enhancements such as high visibility clothing, best pr…More2009 National Traffic Management & Work Zone Safety Conference
The acclaimed Traffic Management & Work Zone Safety Conference managed by the ARTBA - Transportation Development Foundation was held March 9-13 in Orlando, Florida, in conjunction with World o… More
Work Zone Lighting’s Effect on Driver Visibility (Publication)
Resource Type: Books, Reports, Papers, and Research Articles
Portable light towers are a significant source of glare to motorists entering a work zone. Although existing research has evaluated the effect of light tower orientation on visibility and glare, the e…MoreNighttime Visibility of Prototype Work Zone Markings Under Dry, Wet-Recovery, and Rain Conditions (Publication)
Resource Type: Books, Reports, Papers, and Research Articles
This paper presents the findings of a dynamic pavement marking visibility study conducted as part of the FHWA Highways for LIFE Technology Partnerships Program Temporary Wet-Weather Pavement Markings …MoreSimulator and Field Study of Green Lights on Truck-Mounted Attenuators in Missouri During Mobile Operations (Publication)
Resource Type: Books, Reports, Papers, and Research Articles
Mobile work zones for various types of moving operations (e.g., striping, pothole patching, sweeping) are an important component in highway maintenance activities which have particular safety issu…MoreDocumenting Construction Worker Knowledge and Attitude Around Reversing Aids and Visibility Policies (Publication)
Resource Type: Books, Reports, Papers, and Research Articles
Accidents and fatalities related to reversing machinery continue to be a large issue and are very costly to the industrial sector. Even with the policies and legislation efforts established on worksit…MoreImprovements in Safe Working on Roads (Publication)
Resource Type: Books, Reports, Papers, and Research Articles
The focus of this guide is on safety of both workers and road users in construction zones. For the safe, efficient and effective management of work zones, it is proposed that a 4 C's principle be adop…MoreA Comparative Study of Machine Learning Classification for Color-based Safety Vest Detection on Construction-Site Images (Publication)
Resource Type: Books, Reports, Papers, and Research Articles
Detecting the safety vests is an important foundation for various applications in safety management and productivity measurement. The fluorescent yellow-green color and fluorescent orange-red color of…MoreEvaluation of Green Lights on TMAs (Publication)
Resource Type: Books, Reports, Papers, and Research Articles
The use of green versus traditional amber lights on Truck Mounted Attenuators (TMAs) was investigated to see if their use could help to improve safety in mobile work zones. Four light color configurat…MoreEffects of Mounting Height, Offset Distance, and Number of Light Towers on Drivers’ Visual Performance and Discomfort Glare in Work Zones (Publication)
Resource Type: Books, Reports, Papers, and Research Articles
Portable light towers are a significant source of glare to motorists entering a work zone. Although existing research has evaluated the effect of light tower orientation on visibility and glare, the e…MoreIllumination and Visibility of Workers in Nighttime Highway Work Zones (Publication)
Resource Type: Books, Reports, Papers, and Research Articles
Much of the construction work that occurs on high-speed roadways takes place at night to minimize impacts on drivers. Performing work at night exposes workers to hazards that are not present during th…MoreUse of Additional Lighting for Traffic Control and Speed Reduction in Work Zones (Publication)
Resource Type: Books, Reports, Papers, and Research Articles
Performing roadway construction work at night exposes workers to hazards that are not present or as great during the daytime. Working at night requires illuminating the area where work is taking place…MoreImpact of Temporary Portable Work Zone and Personal Lighting on Vehicle Speeds in Nighttime Highway Preservation Projects (Publication)
Resource Type: Books, Reports, Papers, and Research Articles
Every year thousands of people are killed or injured in work zone crashes in the US due to excessive speed, distraction, inattentiveness, or low visibility. Many highway construction, maintenance, and…MoreBeyond Compliance (Publication)
Resource Type: News and Other Non-research Articles
Oldcastle, an industry leader in aggregate and ready-mix production, implements a variety of best practices that go beyond rules and regulations to maintain and maximize work zone safety. This article…MoreExamination of the Current Practice of Lighting in Virginia: Nighttime Work Zones and Improving Safety Through the Development of Nighttime Lighting Specifications (Publication)
Resource Type: Books, Reports, Papers, and Research Articles
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)…MoreMDOT Raises the Bar on Work Zone Visibility (Publication)
Resource Type: Other News Releases
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 m…MoreImpacts of Fog Characteristics, Forward Illumination, and Warning Beacon Intensity Distribution on Roadway Hazard Visibility (Publication)
Resource Type: Books, Reports, Papers, and Research Articles
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 dr…MoreAssessment of Drivers’ Visual Perception of Information Displayed in LED Traffic Signs at Road Construction Sites (Publication)
Resource Type: Books, Reports, Papers, and Research Articles
This study investigated drivers' visual perception of information displayed in LED traffic signs under different levels of environmental luminance. Concerning the information displayed, the environmen…MoreEffect of Work Zone Lighting on Drivers’ Visual Performance and Perceptions of Glare (Publication)
Resource Type: Books, Reports, Papers, and Research Articles
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…MoreThe Effect of Work Zone Lighting on Drivers’ Visual Performance and Perceptions of Glare (Publication)
Resource Type: Books, Reports, Papers, and Research Articles
Nighttime crashes at work zones are a major concern for construction workers and motorists. Although a majority of the state department of transportations (DOT) specifications of work zone lighting in…MoreToward Modeling the Effect of Vertical Illuminance on Perceived Glare in Work Zones (Publication)
Resource Type: Books, Reports, Papers, and Research Articles
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 perso…MoreMDOT to Pay More for Brighter Orange Barrels (Publication)
Resource Type: News and Other Non-research Articles
Despite concerns among suppliers of orange construction barrels, the Michigan Department of Transportation has decided to join about 20 other states in switching to the new and more costly reflective …MoreAnalysing the Influence of Visible Roadwork Activity on Drivers’ Speed Choice at Work Zones Using a Video-Based Experiment (Publication)
Resource Type: Books, Reports, Papers, and Research Articles
The present study used a video-based experimental design to investigate the influence of visible roadwork activity on speed preferences at work zones. Four videos from real work zones in Norway were u…MoreImproved Business Driveway Delineation in Urban Work Zones (Publication)
Resource Type: Books, Reports, Papers, and Research Articles
This report documents the efforts and results of a two-year research project aimed at improving driveway delineation in work zones. The first year of the project included a closed-course study to iden…MorePhotometric Evaluation of Steady-Burn Warning Lights in Work Zones (Publication)
Resource Type: Books, Reports, Papers, and Research Articles
This report documents the efforts and results of several photometric evaluations performed by researchers at the Texas A&M Transportation Institute to assess the performance of steady-burn warning…MoreNighttime Highway Construction Illumination (Publication)
Resource Type: Books, Reports, Papers, and Research Articles
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 d…MoreConfiguring Retroreflective Markings to Enhance the Night-Time Conspicuity of Road Workers (Publication)
Resource Type: Books, Reports, Papers, and Research Articles
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 biolo…MoreCan You See Me Now? Visibility in Work Zones at Night (Publication)
Resource Type: Articles, News and Other Non-research Articles
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 discus…More