Studies from Harbin Institute of Technology in the Area of Risk Management Described (A generalized exponential link function to map a conflict…

Studies from Harbin Institute of Technology in the Area of Risk Management Described (A generalized exponential link function to map a conflict indicator into severity index within safety continuum framework)

By a News Reporter-Staff News Editor at Insurance Weekly News -- A new study on Risk Management is now available. According to news reporting originating from Harbin, People's Republic of China, by VerticalNews correspondents, research stated, "Traffic conflict indicators measure the temporal and spatial proximity of conflict -involved road users. These indicators can reflect the severity of traffic conflicts to a reliable extent."

Our news editors obtained a quote from the research from the Harbin Institute of Technology, "Instead of using the indicator value directly as a severity index, many link functions have been developed to map the conflict indicator to a severity index. However, little information is available about the choice of a particular link function. To guard against link misspecification or subjectivity, a generalized exponential link function was developed. The severity index generated by this link was introduced to a parametric safety continuum model which objectively models the centre and tail regions. An empirical method, together with full Bayesian estimation method was adopted to estimate model parameters. The safety implication of return level was calculated based on the model parameters. The proposed approach was applied to the conflict and crash data collected from 21 segments from three freeways located in Guangdong province, China. The Pearson's correlation test between return levels and observed crashes showed that a theta value of 1.2 was the best choice of the generalized parameter for current data set. This provides statistical support for using the generalized exponential link function."

According to the news editors, the research concluded: "With the determined generalized exponential link function, the visualization of parametric safety continuum was found to be a gyroscope-shaped hierarchy."

For more information on this research see: A generalized exponential link function to map a conflict indicator into severity index within safety continuum framework. Accident Analysis and Prevention, 2017;102():23-30. Accident Analysis and Prevention can be contacted at: Pergamon-Elsevier Science Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, England. (Elsevier - www.elsevier.com; Accident Analysis and Prevention - www.journals.elsevier.com/accident-analysis-and-prevention/)

The news editors report that additional information may be obtained by contacting L. Zheng, Harbin Inst Technol, Sch Transportat Sci & Engn, Harbin, People's Republic of China.

Keywords for this news article include: Harbin, People's Republic of China, Asia, Risk Management, Harbin Institute of Technology.

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