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Methodology for the Development of a Highway Asset Management System for Indiana

機譯：印第安納州公路資產(chǎn)管理系統(tǒng)開發(fā)的方法論

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Highway asset management is a systematic process that aims to preserve, expand, and operate highway assets in the most cost-effective manner. It is an analytical tool that facilitates organized, logical, and integrated decision-making in asset management practice. This study proposes a methodology for the development of a highway asset management system that addresses asset valuation, performance modeling, marginal benefit analysis, and multicriteria decision-making, including tradeoff analysis as well as project selection and programming. While most existing management systems deal with individual physical highway assets or system usage only under certainty or risk, this research focuses on the management of an entire highway network that also incorporates tradeoff decisions involving uncertainty. Systemwide multiattribute utility functions and standardized focus gain-over-loss ratio functions based on utility theory and Shackle’s model, respectively, are calibrated using data collected through a series of questionnaire surveys. A system optimization model, along with a solution algorithm, is formulated to facilitate project selection and programming. A Highway Asset Management System software program is developed and utilized in a case study for systemwide project selection based on information for candidate projects proposed for state highway programming in Indiana during 1998-2001. For all given years and regardless of the tradeoff decision under certainty, risk, or uncertainty, the software outputs match with the results of actual highway programming at least 85 percent of the time. The case study results validate the proposed methodology and research findings and also reveal the advantages of using the algorithm for overall highway asset management practice.
機譯：高速公路資產(chǎn)管理是一個系統(tǒng)的過程，旨在以最具成本效益的方式保護，擴展和運營高速公路資產(chǎn)。它是一種分析工具，可促進資產(chǎn)管理實踐中的組織，邏輯和綜合決策。這項研究為公路資產(chǎn)管理系統(tǒng)的開發(fā)提出了一種方法，該方法可解決資產(chǎn)評估，績效建模，邊際收益分析和多準則決策等問題，包括權(quán)衡分析以及項目選擇和編程。盡管大多數(shù)現(xiàn)有的管理系統(tǒng)僅在確定性或風險下處理單個的物理高速公路資產(chǎn)或系統(tǒng)使用情況，但本研究的重點是整個高速公路網(wǎng)絡的管理，其中還包含涉及不確定性的權(quán)衡決策。分別基于效用理論和Shackle模型的系統(tǒng)范圍內(nèi)的多屬性效用函數(shù)和標準化的焦點盈虧比函數(shù)，是使用通過一系列問卷調(diào)查收集的數(shù)據(jù)進行校準的。制定了系統(tǒng)優(yōu)化模型以及解決方案算法，以方便項目選擇和編程。開發(fā)了公路資產(chǎn)管理系統(tǒng)軟件程序，并基于1998-2001年印第安納州擬議的州立公路規(guī)劃候選項目的信息，將其用于全系統(tǒng)項目選擇的案例研究。對于所有給定年份，無論在確定性，風險或不確定性下進行權(quán)衡決策，軟件輸出至少在85％的時間內(nèi)與實際公路規(guī)劃的結(jié)果相匹配。案例研究結(jié)果驗證了所提出的方法和研究結(jié)果，并揭示了使用該算法進行總體公路資產(chǎn)管理實踐的優(yōu)勢。

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