The left hard shoulder plays an important role in the event of emergency on inside a multi-lane highway, but past studies have not been able to clarify criteria for its installation or quantify safety impact side. In order study influence vehicles traveling highways, based that only studied situation four-lane this paper firstly constructs highway simulation model under different numbers lanes ...

Statistical models have frequently been used in highway safety studies. They can be utilized for various purposes, including establishing relationships between variables, screening covariates and predicting values. Generalized linear models (GLM) and hierarchical Bayes models (HBM) have been the most common types of model favored by transportation safety analysts. Over the last few years, resea...

background: the aim of this study was to assess the effects of road deicing salt on the quality of the ground water resources in hamadan province during winter season. methods: water samples were taken monthly from thirty wells located around the hamadan-asadabad highway. the quality of well water was examined by measuring amount of sodium, chloride, total hardness, total dissolved solid, elect...

In order to explore the law of major and extra serious traffic accidents on expressways in China, a total 802 cases past 10 years were collected, statistical analysis was conducted from aspects time distribution, spatial accident form, cause. The results show that years, incidence casualties extra-serious have shown fluctuating downward trend. January, May, August, November every year, between ...

This paper presents an evolutionary algorithm for recognizing high and low crash road segments using Genetic Algorithm as a dynamic segmentation method. Social and economic costs as well as physical and mental injuries make the governments perceiving to road safety indexes in order to diminish the consequences of road accidents. Due to the limitation of budget for safety...

Its primary objective is to provide ciritcal reviews of research problem areas and techniques, the content of state-of-the-art conferences, integrative research reviews and significant original research. Its dual publication emphasis is rapid and targeted dissemination to the scientific and professional community. ACKNOWLEDGMENT A complementary volume to this, entitled Drugs and Driving: A Rese...

I the past 20 years, many articles about public agencies’ increasing exposure to liability have been published in engineering journals, legal journals, and in the popular press. These articles have helped to further professional awareness of the need to design, construct, and maintain highway facilities with public safety in mind. However, there has been no relief from the relentless juggernaut...

This annotated bibliography summarizes studies of the rural economic development implications of highway investment. Primary emphasis is on research dealing with rural areas, but some urban studies are also cited. Topics covered include the aggregate economic effects of highway investment, the effects of highway investment on business location decisions and employment expansion, the effects of ...