Safety Performance Function (SPF) is essential in traffic safety analysis, and it is useful to unveil hazardous factors related to the crash occurrence. Many alternative methodologies have been applied to develop the SPFs by the researchers (generalized linear regression methods, data mining techniques, and nonparametric statistical methods). Recently, Bayesian inference technology has drawn ma...

While rural freeways generally have lower crash rates, interactions between driver behavior, traffic and geometric characteristics, and adverse weather conditions may increase the crash risk along some freeway sections. This paper examines the safety effects of roadway geometrics on crash occurrence along a freeway section that features mountainous terrain and adverse weather. Starting from pre...

In road safety studies, decision makers must often cope with limited data conditions. In such circumstances, the maximum likelihood estimation (MLE), which relies on asymptotic theory, is unreliable and prone to bias. Moreover, it has been reported in the literature that (a) Bayesian estimates might be significantly biased when using non-informative prior distributions under limited data condit...

Occupational accidents severely deteriorate human capital, and hence negatively affect the productivity and competitiveness. But despite these negative points, there are still deficiencies in safety management performance and indicators. Therefore the safety issue needs an active management. For this reason, the writer has proposed an approach to evaluate organizations based on safety managemen...

This study is devoted to seismic collapse safety analysis of performance based optimally seismic designed steel chevron braced frame structures. An efficient meta-heuristic algorithm namely, center of mass optimization is utilized to achieve the seismic optimization process. The seismic collapse performance of the optimally designed steel chevron braced frames is assessed by performing incremen...

Occupational accidents severely deteriorate human capital, and hence negatively affect the productivity and competitiveness. But despite these negative points, there are still deficiencies in safety management performance and indicators. Therefore the safety issue needs an active management. For this reason, the writer has proposed an approach to evaluate organizations based on safety managemen...