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 ...

This study examines the effect of managerial ability on subsequent stock price crash risk using listed firm data in Korea. Compared to some financially advanced countries, the influence of managers is particularly more powerful in Korea, as ownership and management are not effectively separate in most Korean firms. In addition, we considered the effect of large business groups called Chaebol, w...

Statistical modeling of traffic crashes has been of interest to researchers for decades. Over the most recent decade many crash models have accounted for extra-variation in crash counts--variation over and above that accounted for by the Poisson density. The extra--variation--or dispersion--is theorized to capture unaccounted for variation in crashes across sites. The majority of studies have a...

A number of operational and geometric factors impact the safety of at-grade intersections. Examples include the type of traffic control, the existence of left-turn lanes, and adequate sight distance. Determining whether an intersection of particular geometric design has unusual crash patterns could help identify those locations that need additional safety evaluation. During the last two years, ...

This paper estimates the relationship between crash activity and roadway design attributes on the Oregon state highway system. Crash models are estimated from roadway segments distinguished by functional classification and location. A number of design attributes were found to be related to crash activity in the various models, including number of lanes, curve characteristics, vertical grade, su...

OBJECTIVES The aim of this study was to examine the relationship between personality factors assessed during adolescence and persistent risky driving behavior and traffic crash involvement among young adults. DESIGN Data for this investigation were drawn from the Dunedin Multidisciplinary Health and Development Study, a longitudinal study of a cohort born in Dunedin, New Zealand. SUBJECTS T...

This study aims at 'predicting' the occurrence of lane-change related freeway crashes using the traffic surveillance data collected from a pair of dual loop detectors. The approach adopted here involves developing classification models using the historical crash data and corresponding information on real-time traffic parameters obtained from loop detectors. The historical crash and loop detecto...

A crash can be thought of as a system composed of several elements, including drivers and vehicles that continually interact with each other, while a crash database is a record of the errors attributable to different components of the crash system. Learning from mistakes (errors) is important if crashes are to be avoided. With more than one hundred variables related to the drivers, occupants, c...

PURPOSE Few studies have examined the psychological factors underlying the association between cell phone use and motor vehicle crash. We sought to examine the factor structure and convergent validity of a measure of problematic cell phone use, and to explore whether compulsive cell phone use is associated with a history of motor vehicle crash. METHODS We recruited a sample of 383 undergradua...

The Network File System (NFS) utilizes a stateless protocol between clients and servers; the major advantage of this statelessness is that NFS crash recovery is very easy. However, the protocol requires that data modification operations such as write be fully committed to stable storage before replying to the client. The cost of this is significant in terms of response latency and server CPU an...