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Center for Environmental Excellence | AASHTO
Center for Environmental Excellence | AASHTO
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  • Laws & Agreements
    • Programmatic Agreements Library (PAL)
    • Case Law Updates on the Environment (CLUE)
    • National Environmental Policy Act (NEPA)
    • NEPA Assignment
  • State of the Practice
    • Case Studies
    • Communities of Practice
    • Practitioner Interviews
  • Education
    • Environmental Topics
      • Active Transportation
      • Air Quality
      • Climate Change
      • Environmental Justice
      • Invasive Species/Vegetation
      • Stormwater
      • Sustainability
      • Traffic Noise
      • Waste Management/Recycling
      • Water Quality/Wetlands
      • Wildlife and Ecosystems
    • Practical Applications
      • Context Sensitive Solutions
      • Emerging Technologies
      • Environmental Management Systems
      • Geographic Information Systems
      • NEPA Process
      • Planning & Environment Linkages
      • Project Delivery
      • Protecting Cultural Resources
      • Public Involvement
      • Transportation Policy
      • Using the Practitioner’s Handbooks
  • News
  • Meetings & Events
    • Past Events
  • Resources
    • Practitioner’s Handbooks
    • AASHTO Publications
    • AASHTO Standing Committees
    • Federal & State Agencies
    • Trade Associations
    • Research
      • NCHRP 25-25
      • TERI Database
      • TRB Committees

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Assessing Inter-City Passenger and Inter- and Intra-City Freight Transport Energy and GHG Intensities

By ahardingMay 7, 2021Leave a comment

Problem Statement Energy intensity values (energy use per unit of activity) are basic data for forecasting, policy analysis, planning, and monitoring progress toward energy and environmental goals. They are essential…

Life Cycle Analysis of Alternative Fuels for Trains, Planes, and Ships

By ahardingMay 7, 2021Leave a comment

Problem Statement The life cycle analysis (LCA) of transportation fuels is a critical step when comparing the energy and environmental attributes of conventional and alternative fuels. LCA accounts for the…

Assessing Direct and Indirect Lifecycle GHG Impacts of Advanced Fuels and Vehicles

By ahardingMay 7, 2021Leave a comment

Problem Statement Regulatory and market pressures are mounting that would encourage a transition of the ground transportation system toward advanced fuels and vehicles. In the US, EPA and NHTSA have…

Driving and the Built Environment Part II

By ahardingMay 7, 2021Leave a comment

Problem Transportation Research Board’s Special Report 298: Driving and the Built Environment: The Effects of Compact Development on Motorized Travel, Energy Use, and CO2 Emissions recommended specific research on the effects…

Assessment of the Potential for a Climate Change “Truth in Advertising” Initiative for the Transportation Sector

By ahardingMay 7, 2021Leave a comment

Problem Currently, transportation goods and services are marketed, promoted, and sold with very little information related to their carbon footprint or other possible impacts to the climate. For example, the…

Compilation and Analysis of Court Decisions Regarding Greenhouse Gas (GHS) Emissions

By ahardingMay 7, 2021Leave a comment

Problem The regulation of greenhouse gases is in its infancy in the United States, with piecemeal programs promulgated by the states and nascent regulations proposed and finalized by the United…

Promoting Eco-Driving to Reduce GHG Emissions

By ahardingMay 7, 2021Leave a comment

Per the Moving Cooler report, “eco-driving strategies can achieve cumulative greenhouse gas (GHG) reductions by changing the efficiency of individual driving behavior, if widely embraced and practiced.” The Moving Cooler…

GHG Reduction Strategies as Potential “Offset Credits”

By ahardingMay 7, 2021Leave a comment

Problem Current climate change legislation before the US Congress includes provisions for a cap and trade program, where the government guarantees emissions reductions by setting a mandatory cap on aggregate…

Induced Demand from Operational Efficiency, and the Impact on GHG Emissions (Part 2 — Analysis)

By ahardingMay 7, 2021Leave a comment

Induced demand – also referred to as latent demand or the “rebound effect” – is the phenomenon that after supply increases, more of a good is consumed. In economic terms,…

Cap and Trade and Transportation Sector Specific Policies

By ahardingMay 7, 2021Leave a comment

Problem How would pursuing transportation sector specific policies in conjunction with a cap and trade system change the price of allowances, alter the share of emissions reductions from transportation, and…

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The Center for Environmental Excellence by the American Association of State Highway and Transportation Officials (AASHTO) has been developed in cooperation with the Federal Highway Administration to promote environmental stewardship and to encourage innovative ways to streamline the transportation delivery process.

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