Despite significant advances in risk management, routing hazardous materials (hazmat) has relied on relatively simpler methods. In this paper, we formally introduce an advanced risk measure, called conditional valueat-risk (CVaR), applied to truck routing problems for hazmat transportation. We find that CVaR offers a flexible, risk-averse, and computationally tractable routing method that is ad...

This article presents an efficient parametric optimization method for the biobjective optimal routing problem. The core process is a bounded greedy singleobjective shortest path approximation algorithm. This method avoids the computationally intensive dominance check with labeling methods and overcomes the deficiency with existing parametric methods that can only find extreme nondominated paths...

Warning system effectiveness is critically important in selecting an appropriate emergency warning system to alert to public to potential danger. This paper examines warning system effectiveness in terms of the timing of warning receipt and response. Warning receipt involves the analysis of when warning system information is received, which includes alerting the public and delivering a warning ...

This paper considers the effect of train speed on railroad hazardous materials transportation risk. A statistical method was developed to estimate the speed-dependent conditional probability of release (CPR) of tank cars involved in accidents with the objective of assessing its effect on risk analysis results. A case study of a representative hazardous materials route was conducted in which ris...

Chongqing Engineering Technology Research Center for Information Management in Development, Chongqing Technology and Business University, Chongqing, China Chongqing Key Laboratory of Electronic Commerce & Supply Chain System, Chongqing Technology and Business University, Chongqing, China School of Yinxing International Hospitality Management, Chengdu University of Information Technology, Chengd...

Railroad hazardous materials transportation route risk analysis is receiving considerable new attention from industry and government. Such analyses are necessary for effective public policy and development of rational risk management strategies. However, route risk analysis is complex and generates results that can be difficult to properly interpret. Risk analyses are intended to provide risk m...

INTRODUCTION The concept of Environmental Information System (EIS) emerged from the concerns and the efforts carried on by world wide private and official organisations in order to promote an effective use of the environmental data. These data are of various natures such as statistics, thematic maps, or documents describing the identification and the quantification of the environmental resource...

During the past century, there has been a dramatic increase in the number of chemicals produced. Worldwide, there are more than 5 million known chemicals, with an additional 10,000 to 20,000 new chemicals developed each year. Furthermore, an estimated 500,000 unique shipments of hazardous materials occur daily throughout the United States, resulting in thousands of exposures to hazardous materi...