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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 CEE 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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  2. Research Idea (TERI)

Guidance for Transportation Modelers for Generating Traffic and Activity Data for Project-Level Air Quality Analyses

By ahardingMay 7, 2021Leave a comment

The recently completed NCHRP 08-83 study (see excerpt below) on “Analytical Travel Forecasting Approaches for Project-Level Planning and Design” addressed project-level transportation modeling in detail but only addressed air quality…

Multi-pollutant benefits of on-road motor vehicle control strategies

By ahardingMay 7, 2021Leave a comment

While there are a number of published studies that provide information to state and local agencies about the potential emission reduction benefits of control strategies that are designed to reduce…

Performance Standards for Invasive Species Control

By ahardingMay 7, 2021Leave a comment

There is a need for invasive species control performance standards.  NCHRP Synthesis 363 identified that there are few studies that quantify benefits of invasive secies control, thus highway departments often commit…

Highway Photovoltaic Noise Barriers (PVNB)

By ahardingMay 7, 2021Leave a comment

Transportation agencies worldwide are increasingly seeking ways to cost-effectively improve the sustainability of their various activities, particularly by reducing their greenhouse gas emissions. The PVNB is one technology that highway…

Integrating Traffic Data Sources and Advanced Data Collection Technologies for Facilitating Project-Level Transportation Conformity Analysis

By ahardingMay 7, 2021Leave a comment

When applying MOVES (MOtor Vehicle Emission Simulator) in project-level PM (particulate matter) conformity analysis, link-based traffic characteristics are required at local roadway level so as to ensure realistically representation of…

The Effectiveness of Compost Amended Vegetated Filter Strips Using a Compost Blanket Application Method for Pollutant Removal from Highways

By ahardingMay 7, 2021Leave a comment

Research Idea Scope Background: Current municipal and transportation-related stormwater permits in western Washington require the use of low impact development (LID) as the preferred and commonly used approach to managing…

Estimating Saturated Conductivity and Modeling Infiltration Rates on Highway Embankments for Stormwater Management

By ahardingMay 7, 2021Leave a comment

Background: Natural and engineered dispersion are best management practices (BMPs) designed to receive highway runoff from sheet flow for the purposes of water quality treatment and flow control. These BMPs…

Portland Cement Pervious Concrete Pavement on Highway Shoulders – Stormwater Quality and Quantity Assessment

By ahardingMay 7, 2021Leave a comment

Background: This research proposal seeks to study Portland Cement Pervious Concrete’s (PCPC) ability to remove pollutants, particularly heavy metals, and reduce surface volume flows from highway runoff. This study will…

Characterizing Uncertainty in Transportation Air Quality Modeling

By ahardingMay 7, 2021Leave a comment

Regulatory-mandated air quality analysis, such as SIP analysis, transportation conformity determinations, and project level evaluations typically require the use of multiple models (model chain) to analyze a complex chain of land use…

Indiana and Northern Long-eared Bat Roost Tree Density as a Function of Distance from the Edge of Cleared Transportation ROW.

By ahardingMay 7, 2021Leave a comment

To identify the likelihood of suitable roost tree occupancy for both the Indiana and Northern Long-eared bat as the distance from cleared ROW increases. This would require a multi-year habitat…

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