کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
589514 878708 2012 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Prioritizing highway safety improvement projects: A multi-criteria model and case study with SafetyAnalyst
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بهداشت و امنیت شیمی
پیش نمایش صفحه اول مقاله
Prioritizing highway safety improvement projects: A multi-criteria model and case study with SafetyAnalyst
چکیده انگلیسی

This paper presents a multi-criteria model for prioritizing highway safety improvement projects, in which a set of criteria related to the project’s technical, economic, and social impacts are properly weighted in consideration. The proposed model features an Analytical Hierarchy Process (AHP) framework to tackle the multi-criteria decision making problem. Different from the conventional AHP, this paper adds a fuzzy scale level between the criteria level and the alternative level, which offers the advantage of preventing the vagueness and uncertainty on judgments of the decision-maker(s). Such a unique modeling feature is further embedded with a non-linear optimization formulation to maximize the consistency in pair-wise comparison and weight estimation for each criterion. Case study results reveal that the proposed model is efficient not only for selecting the most suitable project for a specific site, but also for determining the priorities for implementing those suitable projects among multiple sites given the budget constraint. Comparative study between the proposed model and the existing ranking methods has also indicated its capability to capture the comprehensive impacts of all contributory factors which have been neglected by most existing single multi-criteria approaches during the safety project selection process. The clarity of model inputs, ease of synthesizing the final score of each candidate project, and the interpretation of results with respect to different selection criteria offer its best potential to be used as an effective tool for highway safety managers to assess and refine the safety improvement investments.


► We introduce a multi-criteria model to prioritize highway safety investments.
► An AHP embedded with fuzzy scaling and non-linear optimization is used.
► We evaluate the model with cases from SafetyAnalyst.
► The model offers an effective tool for highway authorities in decision making.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Safety Science - Volume 50, Issue 4, April 2012, Pages 1085–1092
نویسندگان
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