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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
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      • Climate Change
      • Environmental Justice
      • Invasive Species/Vegetation
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      • Traffic Noise
      • Waste Management/Recycling
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      • Context Sensitive Solutions
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      • NCHRP 25-25
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  2. Research Idea (TERI)

Mortality Effects of Continuous Concrete Highway Median Barriers on Wildlife

By ahardingMay 7, 2021Leave a comment

TERI Administrator Note (March 2008) Research Completed: HIGHWAY MEDIAN IMPACTS ON WILDLIFE MOVEMENT AND MORTALITY – State of the Practice Survey and Gap Analysis, CalTrans, 2006 http://www.dot.ca.gov/newtech/researchreports/reports/2006/median_barrier_final_report.pdf Problem Statement: Along…

Evaluation Of Culvert Designs For Juvenile Salmonid Passage

By ahardingMay 7, 2021Leave a comment

Problem Statement: In transportation programs, there is a need to address situations that may affect salmon and their habitats under the Endangered Species Act (ESA). Culverts can block upstream passage…

Roadside Animal Detection Systems Test-bed

By ahardingMay 7, 2021Leave a comment

Problem: Animal vehicle collisions are a challenge from the safety and ecological standpoint. Many current solutions are expensive (large crossing structures), potentially ineffective (static warning signs), or potentially ecologically damaging…

Effectiveness of Wildlife Habitat Linkage as a Tool for Offsetting Effects of Habitat Loss and Fragmentation

By ahardingMay 7, 2021Leave a comment

Problem Statement: Over the last decade natural resource agencies and transportation agencies have become increasingly aware of the effects that highway and railroad systems have on wildlife and fisheries. The…

Assessment of Environmental Impacts of Products/Chemicals Used in Maintenance of Highways

By ahardingMay 7, 2021Leave a comment

Problem Statement:   To maintain the highway infrastructure, right-of-way and their functions, many operations including snow and ice control, paving/patching, surface sealing, traffic marking and vegetation management may use chemical…

Case Studies of ‘Green’ Guardrails and Naturalizing of Median Strips to Test the Impact on Traffic Safety and Environmental Quality

By ahardingMay 7, 2021Leave a comment

Predicting Soil Loss on Highway Systems Based on a Revised Universal Soil Loss Equation (RUSLE) Specific to Highway Site Conditions

By ahardingMay 7, 2021Leave a comment

Problem Statement: Currently there is no basic methodology to predict soil loss or recommend erosion and sediment control measures specifically for highway projects. Lack of a methodology impairs the ability…

Rapid Assessment Technique to Assess the Effects of Transportation Development on Area-wide Water and Ecological Resources

By ahardingMay 7, 2021Leave a comment

Since the mid 1990s, the concept of watershed evaluation and assessment has come to the forefront of land use planning and related decision making.  Faced by these issues, the DOTs…

Evaluate Area-wide Cumulative Effects Assessment (ACEA) Methodology as a Mechanism for Cumulative Impacts Analysis of Regional Transportation Plans

By ahardingMay 7, 2021Leave a comment

TERI Database Administrator Notes:  Not recommended at present time by 2009 Environmental Process Subcommittee.  Funded as NCHRP 25-25 54 “Evaluate Colorado’s Area-wide Cumulative Effects Assessment (ACEA) Methodology as a Mechanism…

Smart Growth Strategies for Rural Communities with a Focus on Secondary & Cumulative Effects Associated with Interchange Projects

By ahardingMay 7, 2021Leave a comment

2. Review "smart growth" literature and intitiatives in ten (10) case studies across America.  4. Predict and discuss what could happen to places that have little state of planning and…

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