The prospect of global warming and increased climate variability has become a major policy issue during the last decade. Since transportation is a major—and growing—contributor to greenhouse gas (GHG) emissions, transportation agencies will increasingly seek ways to address it by developing ways to mitigate GHG emissions. This will be especially ch
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Coastal regions have been experiencing more frequent and more intensive tropical cyclones (TCs) due to climate change in recent years. In 2020, the tropical storms in the Atlantic Ocean made a number record in a season, with 30 named storms in total, 13 of which progressed into hurricanes. Global warming will continue, and climate change will follo
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Transportation planners in coastal communities plan for future hazards and risks of sea-level rise (SLR), and often, they communicate risk in public meetings via PowerPoint presentations with charts as well as two-dimensional (2D) maps that visualize information using Geographic Information Systems (GIS) technologies. This project investigates the
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Hazards, Risk, Disasters Climate change creates new challenges for all critical transportation infrastructure, especially for railroads with an open system that is continuously exposed to the elements. A Threat and Hazard Identification and Risk Assessment (THIRA) is a necessary first step for an organization to understand the challenges and develo
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The transportation sector is the largest source of greenhouse gas emissions in the United States, responsible for one-third of all emissions. To address the growing climate crisis, and to meet the goal of net-zero GHG emissions economy-wide by 2050, it is critical to decarbonize transportation by eliminating nearly all GHG emissions from the sector
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Early investments in climate change research, policy, and planning focused heavily on climate mitigation—efforts to reduce greenhouse gas emissions. Adaptation initiatives are essential to the resilience of the transportation system in the face of increasingly severe climate threats; the failure to adapt will result in repair and recovery efforts a
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With a focus on the transportation infrastructure in Texas, this research report: (a) highlights the gaps and challenges in assessing resilience in road networks, (b) provides an overview of metrics and tools for assessing road network vulnerability and resilience, and (c) introduces foundational information and methods to systematically incorporat
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California has a range of existing and proposed targets toward a low carbon future. This paper summarizes an analytical review, focused on modeling approaches and what is known about their feasibility and cost. The findings in this paper are based on the Climate Change Policy Modeling (CCPM) forum, which included modelers, policy makers and stakeho
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The objective of this project is to provide transit professionals with information and analysis relevant to adapting U.S. public transportation assets and services to climate change impacts. Climate impacts such as heat waves and flooding will hinder agencies' ability to achieve goals such as attaining a state of good repair and providing reliabili
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An evaluation of renewable hydrogen production technologies anticipated to be available in the short, mid- and long-term timeframes was conducted. Renewable conversion pathways often rely on a combination of renewable and fossil energy sources, with the primary conversion step relying on a completely renewable source and the auxiliary steps using a
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The Iowa Department of Transportation (DOT) is responsible for approximately 4,100 bridges and structures that are a part of the state's primary highway system, which includes the Interstate, US, and Iowa highway routes. A pilot study was conducted for six bridges in two Iowa river basins—the Cedar River Basin and the South Skunk River Basin—to dev
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Aviation emissions have been found to cause 5% of global anthropogenic radiative forcing and ~16 000 premature deaths annually due to impaired air quality. When aiming to reduce these impacts, decision makers often face trade-offs between different emission species or impacts in different times and locations. To inform rational decision-making, thi
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Freight represents about 30% of transportation greenhouse gas (GHG) emissions in the United States. As local and regional governments develop plans and strategies to reduce communitywide GHG emissions, emissions from goods movement must be addressed. Unfortunately, many local climate action plans (CAPs) and freight plans put little emphasis on frei
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Heavy-duty diesel trucks are significant contributors of nitrogen oxides and particulate matter emissions. As a result, areas with a lot of truck traffic often experience elevated levels of diesel related air pollution. There has been increasing awareness of this environmental justice issue, which has led to the designation of disadvantaged communi
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While hurricane evacuation notices are typically timed to attempt to clear evacuees from the roadways prior to the arrival of tropical storm force (or greater) winds, low lying areas must also be concerned about storm surge flooding, particularly for surge forerunners and as sea levels rise. This report uses water level time series data from the U.
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The escalating impacts of climate change and rapid urbanization pose significant challenges to non-motorized transportation facilities (NMTFs) and low-income communities (LICs) in Delaware. This project aims to assess the negative impacts of climate change, including sea level rise (SLR), increasing temperatures, and changes in precipitation patter
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This new book documents how key changes in land development patterns could help reduce vehicle greenhouse gas emissions. Based on a comprehensive review of dozens of studies by leading urban planning researchers, the book concludes that urban development is both a key contributor to climate change and an essential factor in combating it. The author
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This document presents highlights from five research reports on airport greenhouse gas (GHG) emissions inventories. It presents the most salient findings for policy makers and U.S. airports seeking to better understand and inventory airport GHG emissions. The emphasis in this summary is to provide recommendations on reasonably accurate and low cost
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Home gardeners’ concerns for the environment are expressed both in the ecofriendly gardening practices they use and in environmental attributes they prefer in the gardening products they purchase. This study uses data from a 2018 survey of 601 Tennessee outdoor home gardeners and a multiple indicators multiple causes (MIMIC) model to illustrate how
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This proposed study focuses on assessing the demand for plug-in hybrid electric vehicles (PHEV) in Wisconsin and its economic impacts on the State's energy market and the electric grid. PHEVs are expected to provide a range of about 40 miles per drive cycle using plug-in recharging from the electric grid, in addition to the virtually unlimited rang
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