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Suggested Citation:"Acronyms." National Academies of Sciences, Engineering, and Medicine. 2020. Incorporating the Costs and Benefits of Adaptation Measures in Preparation for Extreme Weather Events and Climate Change—Guidebook. Washington, DC: The National Academies Press. doi: 10.17226/25744.
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Page 181
Page 182
Suggested Citation:"Acronyms." National Academies of Sciences, Engineering, and Medicine. 2020. Incorporating the Costs and Benefits of Adaptation Measures in Preparation for Extreme Weather Events and Climate Change—Guidebook. Washington, DC: The National Academies Press. doi: 10.17226/25744.
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Page 182
Page 183
Suggested Citation:"Acronyms." National Academies of Sciences, Engineering, and Medicine. 2020. Incorporating the Costs and Benefits of Adaptation Measures in Preparation for Extreme Weather Events and Climate Change—Guidebook. Washington, DC: The National Academies Press. doi: 10.17226/25744.
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Page 183
Page 184
Suggested Citation:"Acronyms." National Academies of Sciences, Engineering, and Medicine. 2020. Incorporating the Costs and Benefits of Adaptation Measures in Preparation for Extreme Weather Events and Climate Change—Guidebook. Washington, DC: The National Academies Press. doi: 10.17226/25744.
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Page 184

Below is the uncorrected machine-read text of this chapter, intended to provide our own search engines and external engines with highly rich, chapter-representative searchable text of each book. Because it is UNCORRECTED material, please consider the following text as a useful but insufficient proxy for the authoritative book pages.

181 ADT average daily traffic BCA benefit-cost analysis BCR benefit-cost ratio BUILD Better Utilizing Investments to Leverage Development CBA cost-benefit analysis cfs cubic feet per second CH4 methane CMIP Coupled Model Intercomparison Project CO2 carbon dioxide CREAT Climate Resilience Evaluation and Awareness Tool DOT Department of transportation EIA Economic impact analysis ER Emergency Relief FEMA Federal Emergency Management Agency FIRM Flood Insurance Rate Map FIS Flood Insurance Study FY fiscal year GCM general circulation model GHG greenhouse gas HEC Hydraulic Engineering Circular IDF intensity-duration-frequency IRR internal rate of return ITS intelligent transportation system IWG Interagency Working Group LCCA life-cycle cost analysis MnDOT Minnesota Department of Transportation MOVES Motor Vehicle Emission Simulator N2O nitrous oxide NOx nitrogen oxides NOAA National Oceanic and Atmospheric Administration NPS National Park Service NPV net present value O&M operations and maintenance OMB Office of Management and Budget P3 public-private partnership ppm parts per million PV present value PVC present value coefficient Acronyms

182 Incorporating the Costs and Benefits of Adaptation Measures in Preparation for Extreme Weather Events and Climate Change—Guidebook RCP representative concentration pathway RI recurrence interval ROI return on investment S-NPV sustainable net present value S-ROI sustainable return on investment SC-CO2 social cost of carbon SLR sea level rise SOx sulfur dioxides SRES Special Report on Emissions Scenarios STIP state transportation improvement plan SWMM-CAT Stormwater Management Model Climate Adjustment Tool TAMP transportation asset management plan TBL triple bottom line TIGER Transportation Investment Generating Economic Recovery USGS United States Geological Survey VPD vehicles per day VSL value of statistical life

Abbreviations and acronyms used without definitions in TRB publications: A4A Airlines for America AAAE American Association of Airport Executives AASHO American Association of State Highway Officials AASHTO American Association of State Highway and Transportation Officials ACI–NA Airports Council International–North America ACRP Airport Cooperative Research Program ADA Americans with Disabilities Act APTA American Public Transportation Association ASCE American Society of Civil Engineers ASME American Society of Mechanical Engineers ASTM American Society for Testing and Materials ATA American Trucking Associations CTAA Community Transportation Association of America CTBSSP Commercial Truck and Bus Safety Synthesis Program DHS Department of Homeland Security DOE Department of Energy EPA Environmental Protection Agency FAA Federal Aviation Administration FAST Fixing America’s Surface Transportation Act (2015) FHWA Federal Highway Administration FMCSA Federal Motor Carrier Safety Administration FRA Federal Railroad Administration FTA Federal Transit Administration HMCRP Hazardous Materials Cooperative Research Program IEEE Institute of Electrical and Electronics Engineers ISTEA Intermodal Surface Transportation Efficiency Act of 1991 ITE Institute of Transportation Engineers MAP-21 Moving Ahead for Progress in the 21st Century Act (2012) NASA National Aeronautics and Space Administration NASAO National Association of State Aviation Officials NCFRP National Cooperative Freight Research Program NCHRP National Cooperative Highway Research Program NHTSA National Highway Traffic Safety Administration NTSB National Transportation Safety Board PHMSA Pipeline and Hazardous Materials Safety Administration RITA Research and Innovative Technology Administration SAE Society of Automotive Engineers SAFETEA-LU Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users (2005) TCRP Transit Cooperative Research Program TDC Transit Development Corporation TEA-21 Transportation Equity Act for the 21st Century (1998) TRB Transportation Research Board TSA Transportation Security Administration U.S. DOT United States Department of Transportation

H-4 Step 2. Add points to Future Discharges and Damages curves. Adding more points for the discharge vs. return period and damage vs. discharge graphs will correct for discrepancies between existing conditions and future climate conditions. Use the following equations to calculate climate-adjusted return periods (𝑇 for 𝑄 based on Step 1. 𝐿𝑜𝑔 𝑇 Log 𝑇 𝐿𝑜𝑔 𝑇 𝐿𝑜𝑔 𝑇′ ∗ 𝑄 𝑄𝑄 𝑄′ 𝐿𝑜𝑔 𝑇 Log 100 𝐿𝑜𝑔 100 𝐿𝑜𝑔 50 ∗ 11,665 10,50511,665 9,979 𝐿𝑜𝑔 𝑇 2 2 1.699 ∗ 0.688 𝐿𝑜𝑔 𝑇 2 0.207 𝐿𝑜𝑔 𝑇 1.793 𝑇 = _62____________________________________________________________________years Step 3. Add points to Future Discharges and Damages. Adding more points for the discharge versus return period and damage versus discharge graphs will correct for discrepancies between existing conditions and future adapted conditions. Use the following equations to calculate climate-adapted return periods (𝑇 for 𝑄 based on Step 1. 𝐿𝑜𝑔 𝑇 log 𝑇 𝐿𝑜𝑔 𝑇 𝐿𝑜𝑔 𝑇 ∗ 𝑄 𝑄𝑄 𝑄 𝐿𝑜𝑔 𝑇 log 500 𝐿𝑜𝑔 500 𝐿𝑜𝑔 100 ∗ 15,562 13,98215,562 11,665 𝐿𝑜𝑔 𝑇 2.699 2.699 2 ∗ 0.405 𝐿𝑜𝑔 𝑇 2.699 2.699 2 ∗ 0.405 𝐿𝑜𝑔 𝑇 2.699 0.283 𝐿𝑜𝑔 𝑇 2.416 𝑇 = _260___________________________________________________________________years

Incorporating the Costs and Benefits of Adaptation Measures in Preparation for Extreme Weather Events and Climate Change—Guidebook Get This Book
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Extreme weather events and a changing climate increasingly boost costs to transportation agencies and to the traveling public. While Departments of Transportation (DOTs) are taking into account changing climate and extreme weather when making infrastructure decisions, they typically are not using a formal set of tools or cost-benefit analyses (CBAs) to address climate resilience because they may be too time-consuming and expensive to conduct routinely.

The TRB National Cooperative Highway Research Program's NCHRP Research Report 938: Incorporating the Costs and Benefits of Adaptation Measures in Preparation for Extreme Weather Events and Climate Change—Guidebook was developed to try to fill the gaps identified by DOTs. It is intended to provide a consolidated resource for transportation practitioners to be able to more readily consider CBAs as a tool in their investment-decision making processes when considering different climate and extreme weather adaptation alternatives.

This report has additional resources, including a web-only document NCHRP Web-Only Document 271: Guidelines to Incorporate the Costs andBenefits of Adaptation Measures in Preparation for Extreme Weather Events and Climate Change, a Power Point presentation that describes the research and the results, a spreadsheet tool that provides an approximate test to see if it would be cost-effective to upgrade assets to the future conditions posed by climate change, and a spreadsheet tool that uses existing conditions without climate change only to calculate the new return period for future conditions with climate change.

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