Using a binary probit model with random effects to evaluate the effectiveness of high-visibility personal protective equipment on nighttime highway operations.
Valentin V; Abraham D; Mannering F
Evolution of and Directions in Construction Safety and Health: Proceedings of CIB W99 International Conference 14th Rinker International Conference, March 9-11, 2008, Gainesville, Florida. Hinze J, Bohner S, Lew J, eds., Gainesville, FL: University of Florida, 2008 Mar; :289-303
Nighttime construction has become an accepted procedure for roadway maintenance and construction operations although it presents visibility problems for motorists and workers. High-visibility garments are used to improve the visibility of roadway workers. This paper presents a methodology to compare the visibility of different high-visibility safety garments. The high-visibility garments were displayed in a simulated maintenance work zone on an interstate in Midwest USA. Videos were recorded using a camera which was mounted on a passenger car which passed through the work zone at the posted speed limit. These videos were then shown to drivers who compared the visibility of the garments of the construction workers. Statistical analysis was conducted to examine the impact of random effects by considering characteristics of the garments, drivers and site, etc. The study found that variables such as the mean of the retroreflectivity measurements of the garment and the frequency of the drivers encountering nighttime work zones were significant when choosing the most visible garment. The study provides insight regarding practices related to high-visibility garment, and can play a significant role in improving worker visibility on nighttime operations.
Construction-industry; Construction-workers; Road-construction; Personal-protective-equipment; Personal-protection; Protective-clothing; Protective-equipment; Protective-materials; Injury-prevention; Statistical-analysis; Accident-prevention;
Author Keywords: Nighttime; Safety; Binary Probit; Personal Protective Equipment; Highvisibility; Work Zone; Construction; Maintenance
Vanessa Valentin, Graduate Research Assistant, School of Civil Engineering, 550 Stadium Mall Drive, Purdue University, West Lafayette, IN 47907-2051
Hinze J; Bohner S; Lew J
Evolution of and Directions in Construction Safety and Health: Proceedings of CIB W99 International Conference 14th Rinker International Conference, March 9-11, 2008, Gainesville, Florida
Purdue Research Foundation, West Lafayette, Indiana