White Papers for Right-Sizing Transportation Investments (2020) / Chapter Skim
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Pages 49-68
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49 White Papers for Right-Sizing Transportation Investments 3. Right-Sizing Through Performance Targets and Trade-offs 3.1.
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50 White Papers for Right-Sizing Transportation Investments standards/targets, or change jurisdictions. This NCHRP study will cover all of these in multiple ways, but this whitepaper will review them in the context of performance standard impact.
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51 White Papers for Right-Sizing Transportation Investments 8. Customer satisfaction, environmental quality and sustainability are increasingly important outcome measures.
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52 White Papers for Right-Sizing Transportation Investments that will have the greatest benefit-cost ratio. Allowing Level 2 roads to deteriorate without preservation or maintenance activities allowed the DOT to focus on higher traffic roadways.
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53 White Papers for Right-Sizing Transportation Investments still has this in place in their 20-year plan as NHS roadways carry a larger economic importance for the state, compared to non-NHS roads. Nevertheless, questions remain about the long-term implications of lowered standards: Should the DOT and commuters adapt to the decreased performance in this tradeoff to ensure better (or maintain)
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54 White Papers for Right-Sizing Transportation Investments Agency (FEMA) funds were used, since this was a catastrophe response effort, the bridge had to be replaced with a similar structure in scope and design.
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55 White Papers for Right-Sizing Transportation Investments network. Thus, this effort allowed limited resources to be allocated across more assets without having to compromise the roadway performance measures, resulting in a significant potential gain to the DOT budget and the state budget overall.
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56 White Papers for Right-Sizing Transportation Investments Right‐Sizing to Addressing Changing Societal Needs In addition to right-sizing efforts that arise from a recognition of funding limitations and the need to more efficiently use existing resources, right-sizing decisions can also be motivated by recognition of new or emerging needs. Policies that Address Multiple Modes and Managing Demand Complete streets policies36, set at the state, regional, and local levels, promote the inclusion and mobility of all roadway users from pedestrians to buses and everything in between.
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57 White Papers for Right-Sizing Transportation Investments performance factors like vehicle volumes, critical lane approaches level of service (LOS) , corridor LOS, and increase in travel time to guide decisions to implement a road diet on a particular roadway.
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58 White Papers for Right-Sizing Transportation Investments DOT is moving overhead signs to roadside location for new signs and replacement efforts. The initiative was sparked by safety regulations to increase the sign face area for NHS roadways.
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59 White Papers for Right-Sizing Transportation Investments intentionally modifying the performance targets of a corridor or asset to justify the increased time between maintenance actions taken by the agency. However, simply deferring action without defining a new (lower)
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60 White Papers for Right-Sizing Transportation Investments often a key performance measure and project criteria within agencies, right-sizing projects should make sure the trade-off analysis is comprehensive to all users of the asset, routine and non-routine. For example, Seattle DOT has right-sized a four-lane roadway down to a three-lane roadway.
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61 White Papers for Right-Sizing Transportation Investments 3.5. Tools of the Trade There are many tools that could potentially be used for analysis and consideration while attempting to determine the impacts and trade-offs of right-sizing projects and programs.
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62 White Papers for Right-Sizing Transportation Investments The benefit of these analytical capabilities to the DOT is readily apparent – quantify the future needs of the pavement network in a defensible and repetitive process. As highlighted by AASHTO,44 the variety of benefits of pavement management systems may include: The effective use of available resources to improve pavement performance.
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63 White Papers for Right-Sizing Transportation Investments Element Inspection. Asset management for bridges apply this basic data to enable proactive agency decision making and stakeholder communications.
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64 White Papers for Right-Sizing Transportation Investments Trade‐off Analysis Tools Cross-asset resource allocation is a relatively new area of activity for DOTs. There are few agencies currently implementing any tools related to the practice and standards are still formative.
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65 White Papers for Right-Sizing Transportation Investments 3.6. DOT Guideline Takeaways The literature indicates that DOTs have right-sized their infrastructure and investments for many reasons including: 1.
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66 White Papers for Right-Sizing Transportation Investments 3. Perform a scenario with the standard project design, current condition (baseline)
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67 White Papers for Right-Sizing Transportation Investments may not properly reflect the potential change. Defining comprehensive measures to compare projects and programs will be more likely to exist in the agencies with more mature performance management.
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68 White Papers for Right-Sizing Transportation Investments depending on their maturity and data available, will directly relate to the sensitivity of the measure. This can also refer to Return on Asset (ROA)
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