69 INTRODUCTION It has been estimated that more than 1 million deer-vehicle crashes (DVCs) occur each year in the United States, costing the traveling public more than $1 billion.1 Some of the countermeasures that have been applied to reduce DVCs include deer fencing, wildlife crossing structures, roadside reflectors, vehicle whistles, highway lighting and speed limit reductions.2–4 The install...

As Se en at ITS A 2 01 3! Why Light Roadways? Among the chief reasons for installing roadway lighting, according to guidance from the Illuminating Engineering Society (IES, 2000), is the potential for lighting to contribute to improved nighttime safety. And the logic that roadway lighting provides drivers with improved visibility and in turn greater distance and longer time to respond to potent...

Deer crossing signs are the most widely used potential countermeasure to deer-vehicle crashes (DVCs). The Manual on Uniform Traffic Control Devices provides qualitative guidance and indicates the installation of these signs where animal crossings are unexpected. Most drivers assume these signs designate roadway segments with larger than typical numbers of DVCs and/or deer crossings. Studies of ...

BACKGROUND Evidence related to the effectiveness of speed humps on reducing pedestrian-motor vehicle collisions (PMVC) has been conflicting. The purpose of this study was to determine the association between speed hump installation and changes in PMVC rates in Toronto, Canada. METHODS Speed humps were mapped along with police-reported pedestrian collisions from 2000-2011 and built environment...

Both the deformation characters and the failure mode of the large cross-sectional longwall installation roadway under compound roof are becoming an emergent issue than ever before due to the rapid development of modern mining equipment. Various engineering applications have revealed that the insufficient design and inappropriate support technology are the main reasons for the fatal accidents as...

Background Barriers are designed and tested to specific design parameters and variations from the design requirements can influence their performance. For this reason, there are tolerances set for the installation and maintenance of w-beam guardrails. These installation guidelines call for a rail height of 27.5 inches plus or minus 3 inches. Despite the efforts to comply with the guidelines, a ...

This research presents a comprehensive analysis of motor vehicle-bicycle crashes using 4 years of reported crash data (2004-2007) in Beijing. The interrelationship of irregular maneuvers, crash patterns and bicyclist injury severity are investigated by controlling for a variety of risk factors related to bicyclist demographics, roadway geometric design, road environment, etc. Results show that ...

The main objective of this paper is to report on unsafe actions of motor vehicle drivers at railroadhighway grade crossings and drivers’ response to installation of a centerline barrier that prevented them from driving around the gates. A comparison of unsafe driver actions in the preand post-barrier periods provided an idea about the effectiveness of the barrier in reducing unsafe driver actio...

in advance longwall mining, the safety of mine network, production rate, and consequently, economic conditions of a mine are dependent on the stability conditions of gate roadways. the gate roadway stability is a function of two important factors: 1) characteristics of the excavation damaged zone (edz) above the gate roadway and 2) loading effect due to the caving zone (cz) above the longwall w...