Analyzing Data for Measuring Transportation Performance by State DOTs and MPOs (2019) / Chapter Skim
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Pages 31-37
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From page 31... ...
31 This chapter presents a discussion of gaps in tools and data to support multimodal mobility, safety, pavement, and bridge and air quality measures in terms of collection, analysis, reporting, application, and data programs in general. This discussion reflects the survey results, follow-up interviews, and case examples, as well as the literature review.
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32 Analyzing Data for Measuring Transportation Performance by State DOTs and MPOs every 2 years being a challenge, one asking for clear direction on how to calculate the area of a culvert, and a few were concerned about the good/fair/poor rating. For example, one state indicated, "The criteria for Good-Fair-Poor conditions is not better than it is for Structurally Deficient.
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From page 33... ...
Gaps in Data and Tools to Support Performance Measurement 33 The survey respondents were commenting on the NPRM, where the requirements related to the reporting of metrics were not yet clear. The final rule and subsequent guidance from FHWA clarifies that states do not need to complete conflation of their networks, which simplifies the requirement significantly.
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34 Analyzing Data for Measuring Transportation Performance by State DOTs and MPOs – One state reported "Current guidance is one mile lengths, but people do not evaluate travel time reliability over such short segments. A more logical process like using NHS intersecting roads as termini would make more sense." • PSL – PSL is available in the HPMS Sample Sections only.
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From page 35... ...
Gaps in Data and Tools to Support Performance Measurement 35 prioritization and planning aspects; more automated analysis tools; enhanced degradation curves representing population of bridges within state's inventory; and migration from Pontis to BrM, conflating BrM data with climatic data, geologic data, socioeconomic data, and natural disaster data. Fifteen states need improved tools for reporting, including better statistical tracking of assets, dashboards for bridge condition, and better visualization tools that are user-friendly.
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From page 36... ...
36 Analyzing Data for Measuring Transportation Performance by State DOTs and MPOs Comments follow: • "It would appear that a single program could be built for the states using NPMRDS to produce the mobility measures. Downloading the data and running it has been very time consuming." (The final rule and subsequent guidance from FHWA clarifies that states do not need to complete conflation of their networks, which simplifies the requirement significantly.)
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From page 37... ...
Gaps in Data and Tools to Support Performance Measurement 37 Bridge Target-Setting Gaps Only seven states reported a need for improved target setting for bridge condition measures. Some of the gaps reported in terms of target setting include completion of a model to predict the growth of structurally deficient (SD)
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