Approach to Level-of-Service Target Setting for Highway Assets (2015) / Chapter Skim
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NATIONAL COOPERATIVE HIGHWAY RESEARCH PROGRAM Responsible Senior Program Officer: Amir N Hanna October 2015 priate LOSs associated with the condition of different assets.
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2toward achieving maintenance program goals can improve internal and external conversations regarding funding priorities. • Maintenance cost accounting systems tend to focus on the cost of inputs rather than on the cost of outputs.
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3Estimate Unit Costs of Highway Maintenance: Knowing the cost of maintenance is essential for optimizing within budget constraints. Maintenance costs must be expressed in measurement units that are consistent with deficiency rates on the agency's LOS scale (e.g., the cost of a mile of paving, an acre of mowing, or a square yard of patching must be known or estimated)
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4Set LOS Targets That Are Attainable within Budget Constraints: Budget constraints are often determined by high-level policy makers, and in some cases, budget constraints cannot be met without some compromise on minimum service expectations (the Guide describes an iterative process for setting attainable targets that maximize program performance by adjusting budget allocations and minimum performance expectations)
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5for allocating funds and managing the maintenance program (an optimization strategy that is easily scalable to different subsets of the maintenance program is provided in the Guide)
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6The final research report, the Guide, and a spreadsheet tool are available on the Transportation Research Board website by searching on NCHRP Research Results Digest 396. ACKNOWLEDGMENTS The research summarized herein was requested by the American Association of State Highway and Transportation Officials (AASHTO)
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Transportation Research Board 500 Fifth Street, NW Washington, DC 20001 These digests are issued in order to increase awareness of research results emanating from projects in the Cooperative Research Programs (CRP)
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