Incorporating Reliability Performance Measures into the Transportation Planning and Programming Processes: Technical Reference (2014) / Chapter Skim
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49 4 TOOL AND METHOD SELECTION PROCESS Color versions of the figures in this chapter are available online: http://www.trb.org/Main/Blurbs/168856.aspx This chapter provides practitioners with guidance on planning a successful reliability analysis that will meet the objectives of the planning product being developed. It includes a discussion of the various factors that influence selection of an appropriate analysis approach based on analysis needs.
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50 INCORPORATING RELIABILITY PERFORMANCE MEASURES INTO THE TRANSPORTATION PLANNING AND PROGRAMMING PROCESSES: TECHNICAL REFERENCE • Step 2. Filter by Input Requirements.
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51 INCORPORATING RELIABILITY PERFORMANCE MEASURES INTO THE TRANSPORTATION PLANNING AND PROGRAMMING PROCESSES: TECHNICAL REFERENCE The output of this process will be the identification of an analysis approach that is appropriate to the needs and objectives of the particular reliability assessment. This general approach will then be further refined and applied in the conduct of the analysis.
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52 INCORPORATING RELIABILITY PERFORMANCE MEASURES INTO THE TRANSPORTATION PLANNING AND PROGRAMMING PROCESSES: TECHNICAL REFERENCE 4.2 STEP 2. FILTER BY INPUT REQUIREMENTS The goal of Step 2 is to filter out tool and method categories based on the availability of input requirements, including data needs and existing tools.
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53 INCORPORATING RELIABILITY PERFORMANCE MEASURES INTO THE TRANSPORTATION PLANNING AND PROGRAMMING PROCESSES: TECHNICAL REFERENCE of these items, the analysts will need to plan additional resources in order to develop the base modeling or data collection capabilities to properly support the analysis. The additional resources are likely to be far greater than the initial resources; therefore, at this stage in the selection process, it is recommended to eliminate any method that requires tools or data that are not presently available.
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54 INCORPORATING RELIABILITY PERFORMANCE MEASURES INTO THE TRANSPORTATION PLANNING AND PROGRAMMING PROCESSES: TECHNICAL REFERENCE 4.3 STEP 3. IDENTIFY RESOURCE AVAILABILITY Step 3 in the analysis method selection process is to compare the needs of the analysis against the available resources to ensure that the analysis may be completed as planned under these assumptions (Table 4.3)
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55 INCORPORATING RELIABILITY PERFORMANCE MEASURES INTO THE TRANSPORTATION PLANNING AND PROGRAMMING PROCESSES: TECHNICAL REFERENCE 4.4 STEP 4. APPLY SCORING MECHANISM A scoring mechanism can be applied to Steps 1 through 3 to help guide the analyst through the tool selection process and ensure all influencing factors are considered in the decision.
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57 INCORPORATING RELIABILITY PERFORMANCE MEASURES INTO THE TRANSPORTATION PLANNING AND PROGRAMMING PROCESSES: TECHNICAL REFERENCE R el ev an ce W ei g h ti n g (0 –5 )
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59 INCORPORATING RELIABILITY PERFORMANCE MEASURES INTO THE TRANSPORTATION PLANNING AND PROGRAMMING PROCESSES: TECHNICAL REFERENCE if the budget availability is medium, the analyst should assign a relevance of "5" to "Medium" and a relevance of "0" for both the "Low" and "High" line items under Budget. The relevance weighting is entered in the shaded column on the left side of the table, and then a score is calculated by multiplying the relevance weighting by the assigned tool rating for each analysis tool or method.
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60 INCORPORATING RELIABILITY PERFORMANCE MEASURES INTO THE TRANSPORTATION PLANNING AND PROGRAMMING PROCESSES: TECHNICAL REFERENCE want to consider contracting out part of the analysis to a third party with available resources (e.g., consultants, universities, research organizations, partner agencies)
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61 INCORPORATING RELIABILITY PERFORMANCE MEASURES INTO THE TRANSPORTATION PLANNING AND PROGRAMMING PROCESSES: TECHNICAL REFERENCE Figure 4.2. Four representative freeway corridors in Minneapolis–Saint Paul (1)
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