Decision Making for Repair Versus Replacement of Highway Operations Equipment (2023) / Chapter Skim
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P A R T I Research Report
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7 C H A P T E R 1 1.1 Purpose of the Research Report The Research Report (Part I) summarizes the research team's approach to developing the resources in NCHRP Project 13-08, "Guideline for Decision-Making for Repair vs.
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8 2.1 Overview The research team's approach to NCHRP Project 13-08 included data collection activities, framework development, and tool development. Data collection activities included a comprehensive literature review, surveys, and interviews.
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Research Approach 9 2.4 Interview Approach The research team conducted 11 interviews with fleet managers as shown in Table 2. Interviews allowed the research team to probe for deeper responses on certain topics than the surveys could provide.
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10 Decision Making for Repair Versus Replacement of Highway Operations Equipment The selected framework integrates useful elements of both qualitative (e.g., slider bars with user-chosen inputs) and quantitative (e.g., numerically derived estimates such as lifetime cost)
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11 3.1 Introduction This chapter presents the findings of the literature review, survey, and interviews. Additionally, the chapter discusses how the information was refined to develop a framework and prototype 4R Tool.
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12 Decision Making for Repair Versus Replacement of Highway Operations Equipment Each of the agencies interviewed indicated that they integrate some level of data or information into their decision-making processes for repairing and replacing highway maintenance equipment. Some agencies track and store data quantitatively in a desktop asset-related system; others base their decisions on qualitative experiences.
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Research Outcomes 13 headquarters level; others are more decentralized with decisions made locally; still others have a hybrid model. The costs of repairing, rebuilding, replacing, or retiring equipment sometimes fall on districts, in which case the decision might fall on that level of the agency; in other agencies costs are carried by the central office and decisions are made at the central level.
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14 Decision Making for Repair Versus Replacement of Highway Operations Equipment Figure 3. Survey results showing whether the decision process is qualitative, quantitative, both, or neither.
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Research Outcomes 15 Level of Decision Making The transportation agencies that were interviewed generally had three different decision-making levels: at the field office level, at the central headquarters level, or a combination of the two. Some agencies make financial decisions at the local district level because the spending of their capital or operating budgets is determined at that level.
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16 Decision Making for Repair Versus Replacement of Highway Operations Equipment decision tools. Additionally, the research team conducted a literature review to better understand existing frameworks for determining the economic lifetime of assets as well as repair limits.
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Research Outcomes 17 no repair decision. Based on this outcome, the user is directed to either the Rebuild vs.
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18 Decision Making for Repair Versus Replacement of Highway Operations Equipment Economic Analysis Module The Economic Analysis Module estimates the differential cost between the repaired, rebuilt, and replaced equipment through the one-year planning horizon. A planning horizon of one year is reasonable because replacement of the repaired equipment is considered in the next annual cycle.
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