State Transportation Agency Decision-Making for System Performance: Practitioner’s Playbook (2023) / Chapter Skim
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1 Introduction The objective of the NCHRP Project 20-126, "Support for Critical Issues in Transportation and Commitment to the Future IHS [Interstate Highway System] " series is to build understanding among state transportation agencies (STAs)
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2 State Transportation Agency Decision-Making for System Performance: Practitioner's Playbook The Visualization Tool displays the complexity and interrelated nature of the elements of the analytic framework. The arc diagram created in the Visualization Tool presents a way to isolate a single objective, trend, or issue and readily see its relationships to other objectives, trends, or issues.
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Introduction 3 issues (identified through extensive research) have on system objectives so that agency decision makers can consider and integrate those trends and issues into an approach taken to improve system performance.
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4 State Transportation Agency Decision-Making for System Performance: Practitioner's Playbook The research team augmented the trends and issues identified in the two foundational reports for this research, the CIHS and CIT2019 (Special Report 329 2019; Critical Issues 2019) , with additional trends and issues gleaned from a broad range of sources.
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Introduction 5 Goods Movement – Growing demand and changing distribution patterns of goods movement are taxing a capacity-constrained system and challenging the efficacy of a key underpinning of the nation's economy. Goods movement also places the greatest physical demands on the transportation network.
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6 State Transportation Agency Decision-Making for System Performance: Practitioner's Playbook VMT/Mileage-Based User Fee (MBUF) – The application of VMT or MBUF presents the opportunity to adjust the revenue needed for maintenance and capacity to actual use, adapt to evolving vehicle propulsion options, and potentially balance system demand.
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Introduction 7 Trends and issues influence multiple objectives. In a multijurisdictional environment where two or more organizations manage interconnected systems, the analytic framework could be used to see common trends and issues that influence each jurisdiction's respective objectives; collaboration in those common areas could help advance their respective interests.
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8 State Transportation Agency Decision-Making for System Performance: Practitioner's Playbook is applicable when there is limited correlational or causal evidence available, where the causality of effects is uncertain, or when dealing with uncertainty. Originally, Delphi Method protocols insisted on group consensus; however, modern applications do not require consensus, only an accurate representation of the group opinion.
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Introduction 9 As noted below, the perspective of the relationships in the analytic framework is a national perspective at a particular point in time. Relationships may be different at a local or regional level, and the relationships will likely change over time.
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10 State Transportation Agency Decision-Making for System Performance: Practitioner's Playbook different from its influence on reliability in a rural one. To address this, users have the option to adjust the relationships among the objectives, trends, and issues.
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Introduction 11 show the strength of the relationship, and the arrowheads at the end of the lines reinforce the directionality. • Objectives are shown on the arc in dark blue.
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12 State Transportation Agency Decision-Making for System Performance: Practitioner's Playbook Figure 3. Example arc diagram showing the influence objectives, trends, or issues have on equity.
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Introduction 13 Select Influence On to view how other elements (objectives, trends, or issues) influence the selection.
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14 State Transportation Agency Decision-Making for System Performance: Practitioner's Playbook Objectives are in dark blue. Trends and issues are in orange.
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Introduction 15 Figure 7. Screenshot of the list of influential elements for equity.
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Safety State of Good Repair Reliability Mobility Accessibility Sustainability Resiliency Equity Economic Development Objective Safety 0 0 2 2 1 0 1 0 1 State of Good Repair -SOGR 2 0 3 3 2 1 3 1 2 Reliability 2 0 0 3 2 2 0 1 3 Mobility 2 0 3 0 3 2 1 2 3 Accessibility 2 1 3 2 0 1 1 3 3 Sustainability 0 1 1 1 1 0 1 2 2 Resiliency 1 1 3 2 0 1 0 1 3 Equity 0 0 0 2 3 1 0 0 2 Economic Development 0 2 2 3 3 2 2 3 0 Trends & Issues Rebuilding the IHS Foundations 2 3 3 2 2 2 3 1 3 [Expanding & Managing ] Urban System Capacity 2 2 3 2 2 2 3 2 3 [Changing Centers of ]
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Introduction 17 Note that "NCHRP_20-126(02) _Objectives_Trends_&_Issues_Spreadsheet.xlsx" is different from the spreadsheet file titled "nchrp_20_126_2_tool_configuration.xlsm." The file "nchrp_20_126_2_tool_configuration.xlsm" is used only for adjusting relationships at the local or regional level, which is explained more fully in "Play 6: Applying the Analytic Framework -- Adjusting the Relationships" within this report.
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