Search Results

Low Berm Measuring and Modeling

Field test and model 12-15 low berms along different roadways and document the results. Compare the measured to the modeled results. Compare the results to typical structural noise barrier results.

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MOVES Modeling for Higher Road Grades

Emission factors versus speed curves generated using the MOVES3 model exhibit very anomalous behavior at higher road grades that are within the range encountered in project-level air quality analyses for

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Improving Project Environmental Cost Estimates

TERI Administrator Note (June 2007): Funded as NCHRP Project 25-25, Task 39, “Improving Project Environmental Cost Estimates.” Project completion date: October 2008. http://www.trb.org/TRBNet/ProjectDisplay.asp?ProjectID=1657  Improvement of cost estimating practices and the

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Assessment of DOTs’ Environmental Commitment Tracking Systems

Assessment of DOTs’ environmental commitment tracking systems TERI Administrator Note (June 2007): Research Completed AASHTO Practitioner Guide: Tracking Compliance with Environmental Commitments/Use of Environmental Monitors (2006) https://environment.transportation.org/center/products_programs/practitioners_handbooks.aspx#tracking This handbook provides

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Wildlife Crossing Structures

Monitor different crossing structures to determine which kinds work best. TERI Administrator Note (June 2007): Research Completed (See Below) NCHRP – Evaluation of the Use and Effectiveness of Wildlife Crossings,

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Recurring Community Impacts

TERI Administrator Note (June 2007): Funded as NCHRP Project 25-25, Task 36 http://www.trb.org/TRBNet/ProjectDisplay.asp?ProjectID=1654 Completed October 2009. Completed study can be found at: http://www.trb.org/NotesDocs/25-25(36)_FR.pdf Survey the state transportation agencies and FHWA

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Implementation of Cultural Resource Commitments

TERI Administrator Note (June 2007): Funded as NCHRP Project 25-25, Task 41 http://www.trb.org/TRBNet/ProjectDisplay.asp?ProjectID=1659 Project completion date: November 2008 Using the 2002/2003 FHWA domestic scan on environmental commitments and AASHTO’s subsequent

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Roadside Animal Detection Systems Test-bed

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

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Impacts of Highway Noise on Migratory Birds

TERI Database Administrator Notes.  Not recommended at present time by 2009 Natural Systems Subcommittee.  Subcommitee recommended funding ID#456, which addresses similar issues. This would be a follow-up to research on the

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Preventing Wildlife Kills on Railroads

Train-wildlife collisions are devastating to wildlife populations, and disproportionately so, to species such as moose, grizzly bear, wolverine, and wide-ranging carnivores in general, which have low reproductive rates.  Habitat fragmentation

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Pay-By-The-Mile Auto Insurance

Using data from one state, conduct a statistical analysis to show the degree to which vehicle miles traveled and 1) accident rates and 2) cost of accidents correlate. Auto insurance

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Data Sources for MOVES

TERI Administrator Note – Selected as FY12 NCHRP Project 25-38 RESEARCH PROBLEM STATEMENT  In the March 2, 2010 Federal Register (FR), EPA approved and announced the availability of the Motor

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CSS and Sustainability in Transportation

This research would focus on defining sustainable transport including understanding how to evaluate transportation options across all issues of sustainability including economic, environmental and equity.  A synthesis of current practice

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Off-Structure Bat Mitigation

The California Department of Transportation (Caltrans) owns thousands of bridges throughout California, many of which provide habitat for bats.  Bats seek out bridges for thermal regulation during reproduction, food digestion,

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Quieter Rumble Strip Design Standards

TERI Database Administrator Notes:  Not recommended at present time by 2009 Environmental Process Subcommittee. Vehicles striking rumble strips can elevate wayside noise levels and generate noise complaints in noise sensitive

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Sustainable Structural Highway Systems

Conventional structural systems do not meet the objectives of environmental stewardship including full use of recycled materials, minimizing labor costs, expedited construction, and a fully recycled system at the end

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Geoarchaeological Sensitivity Modeling

Sensitivity models that will allow for cost effective scoping and identification efforts that also reduce the potential for costly late discovery of archaeological sites To date sensitivity modeling for buried

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Driving and the Built Environment Part II

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

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Effects of Heavy Truck Volumes

Problem Statement Among the many types of on-road vehicles traveling the American highway system, heavy trucks are the loudest frequently-heard noise sources. Comments from residents near highways at project public

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Stormwater Storage

New construction and replaced impervious surfaces will trigger the new LID standard in the future. In implementing the new LID standard, DOTs need a factual basis to assess the feasibility of applying

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NO2 Hotspot Modeling Guidance

EPA’s 1-hour NO2 standard is low enough to potentially cause problems, and they require near-road monitoring to determine attainment.  What are the best methods for modeling roadway and rail (non-electric) NO2 microscale impacts?

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Carbon Footprint of Supply Chains

Problem Supply chains are designed for the processing, staging, and carriage of goods to market. Design choices are determined by sourcing decisions, production and competitive requirements, logistical economies, product characteristics, land

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Clean Freight Corridors

Problem Freight movement accounts for approximately 20% of greenhouse gas (GHG) emissions from transportation and is expected to increase in its share. The logistical challenges of freight transportation which involves multiple

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Quiet Wildlife Underpasses

Many wildlife underpasses are noisy and frighten animals away. Research needs to be done to find a way to make thes structures (bridges, box culvers, steel arch culverts, conspan arches,

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Designing Streets and Highways for Living

Examine performance indicators that measure timely human access more directly.  How can transportation systems be easily evaluated in terms of measures of human quality of life – community livability, increasing commerce

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Salt/Deicing Practices Source Control

The objective of this study is to determine the optimum timing and application rates of various deicing materials.  A variety of standard tests can be conducted to determine the effectiveness of various chemicals, including:

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Mitigating Noise Impacts to Mammals

With the advent of the Marine Protection Act, new construction methods are necessary to reduce the underwater noise impacts to mammals.  This research would examine alternative construction practices to reduce noise.

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Health Impacts of Transportation Decisions

The object is to characterize the health impacts from decisions on transportation–from planning to projects.  This relationship is thought to influence public health issues and transportation agencies need more information about

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Mitigation Methods for Joint Noise

Objective would be to investigate various methods of mitigating noise from joints on overpasses. Look for practical methods that are both cost effective and easy to install/maintain. These methods can

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BMP Effectiveness Evaluation for DOTs

Background: DOTs routinely complete BMP effectiveness studies as a part of their research to improve their stormwater program. Many of the effectiveness studies duplicate research in other parts of the

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Salt toxicity to wild finches

Some years, pine siskins, red crossbills, evening grosbeaks, American goldfinches and other finches are attracted to roads treated with salt. Observers often report lethargy and a lack of wariness as

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Passengership Optimization

In the USA’s 374 metropolitan areas of 50,000 population and above, there is a significant variation in the rate of road-based passengership (being a passenger in a car, van, or

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Construction Emissions Analysis Procedures

Background:  Construction activities can produce fugitive dust and exhaust emissions of criteria pollutants from heavy duty construction equipment.  The AASHTO Air Quality Community of Practice issued State of the Practice

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Geophysical Investigation of Cemeteries

A comprehensive study of the geophysical investigations of cemeteries using case studies (n=50) and interviews with experience practitioners to determine best practices for maximizing the effectiveness of these investigations. Analysis

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Induced Growth

A study of past road projects that had added capacity and an analysis of induced growth caused by these projects. Determining which projects that added capacity actually induced growth and

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Highway Photovoltaic Noise Barriers (PVNB)

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

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