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An improved methodology for estimating traffic accident cost savings in the (preliminary) feasibility study  

Jang, Su-Eun (한국교통연구원 철도동북아교통연구실)
Jeong, Gyu-Hwa (한국교통연구원 철도동북아교통연구실)
Publication Information
Journal of Korean Society of Transportation / v.25, no.5, 2007 , pp. 15-21 More about this Journal
Abstract
This paper proposes an improved methodology for estimating traffic accident cost savings in the transport appraisal. Four major problems from the existing framework are identified and their alternatives are suggested. First, casualties in the established approach are classified by just two types of 'killed' and 'injured'. This study supplies the indices of fatality further details. Namely, road victims are regrouped by 'killed', 'seriously injured', 'slightly injured', and 'accident reports'. Those of railways are similarly sorted by 'killed', 'seriously injured', and 'slightly injured'. Second, damage only accidents are not satisfactorily considered in the current arrangement. The accidents should be considered as one of the accident types and the social cost of them should also be evaluated. Third, the unit cost of accidents is given by the total value. The unit cost is consisted of several elements and each loss would be useful for a policy frame. This study breaks down the total figure into four pieces of costs, namely production loss, medical treatment, property loss, and administrative costs. Finally, there is inconsistency in the audit between roads and railways. Road accidents are analyzed by road types. On the other hand, patronage or others is the classification rule of rail accident costs. This paper suggests a way that the accident costs of two modes can be coherently estimated based on the level of services by each mode. The result of this study is expected to help frame more cautious social overhead capital investment policies.
Keywords
Casualties; Damage only accidents; Unit cost of accidents; Coherence of audits;
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