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The primary objective of this research is to enhance the effectiveness of existing stormwater infrastructure (ponds, channels, inlets, etc.) for containing debris (cigarette litter, tire particles, etc.) and microplastics found
How to effectively capture waste plastic debris (cigarettes, syringes, bags. etc.) prior to discharge from inlets, ditches/curbs, and culvert outfalls to receiving waters that retains designed hydraulic flow characteristics. What
This study would develop a guidebook to help practitioners identify strategies for reducing emissions from the multi-modal freight system, which is a major source of urban air pollution and a
Transportation agency managers have expressed concern that reduced mowing practices, such as those that benefit pollinators, may increase vehicle collisions with large mammals like deer, thereby reducing driver safety. Though
Transportation-related infrastructure affects wildlife in a variety of ways by altering the physical environment. These alterations often negatively impact wildlife through displacement, barriers to movement, and increased mortality. They can
Background Roadway lighting has been shown to measurably reduce nighttime fatal and other crashes. However, roadway lighting can negatively impact insects and animals through attraction and disorientation or by disrupting
Recent research findings identified 6PPD-quinone as the major agent responsible for exceptionally high levels of rapid mortality of adult Coho salmon in some urban streams. Lethal effects occurred in Coho
TERI Administrator Note (February 2009): Project cross-referenced in TRB Research Needs Database. Not recommended at present time by 2009 Air Quality Subcommittee. The first goal of this project is to
Highways create a multitude of impacts on wildlife movement across the landscape. Some of the highway impacts result from the structure of the roadway, location of the roadway, traffic volume,
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. Habitat loss and fragmentation are
I. Research Problem Statement: Erosion (runoff) and sedimentation of and from low-volume roads can adversely impact the environment. Many low-volume roads are soil or aggregate surfaced, have steeper grades than
Transit system capital efficiency is often criticized due to low ridership and high capital costs, combining to limit competitive economic application of this transportation mode. The relatively low volume of
TERI Administrator Note – Selected as NCHRP 25-39 (FY12 Program) RESEARCH PROBLEM STATEMENT Transportation performance management is a well established and effective practice for establishing accountability and driving results
This research should address the numerous technology and market opportunities and barriers for the use of specialized vehicle markets as introductory markets and “launching pads” for alternative fuel and advanced
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
The Permeable Friction Course (PFC also known as Open Graded Friction Course)is a two inch thick overlay applied to existing pavement to reduce splash and spray behind vehicles, and to
TERI Database Administrator Notes: Not recommended at present time by 2009 Environmental Process Subcommittee. State departments of transportation, as well as regional transportation agencies and organizations, (herein after ‘transportation agencies’)
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
TERI Database Administrator Notes: Not recommended at present time by 2009 Air Quality Subcommittee. Improve fuel economy using reduced rolling resistance pavements. Develop a methodology to accurately measure the rolling
TERI Database Administrator Notes: Not recommended at present time by 2009 Air Quality Subcommittee. Vehicle technology and trip reduction have emerged as the primary strategies for reducing greenhouse gas (GHG)
In recent years, northern New England has experienced several unusually large storm events, such as the Mother’s Day storm of 2006 and the Patriot’s Day storm of 2007. These events
Traffic flow has many adverse effects on its surroundings. Efforts to improve traffic operations traditionally focus on some of these factors, such as trip time and stop delay, and try
The Pagosa skyrocket (Ipomopsis polyantha) is a rare plant, endemic to Mancos shale soils, and found only in and around Pagosa Springs in Archuleta County, Colorado. Plants are between 1
This research idea was developed as part of NCHRP Project 24-27(03) “Evaluation of Bridge-Scour Research: Geomorphic Processes and Predictions,” and addresses three Focus Areas (Climate Change, Land use, Indirect Effects/Cumulative
Ultrafine particles (UFP) can be defined as having at least one dimension that is less than 100 nanometers. Because of their dimensions, they exhibit unique properties that affect atmospheric transport
TERI Administrator Note: Selected for FY12 NCHRP funding as NCHRP 25-37 RESEARCH PROBLEM STATEMENT This problem statement was identified by the Natural Systems and Ecological Communities Subcommittee of AASHTO’s Standing
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 hearings and
Tire-pavement noise has become an important consideration for highway agencies, as the public increasingly demands that highway traffic noise be mitigated. Title 23, Part 772 of the Code of Federal
Problem Statement Current transportation noise policies in the United States rely heavily on scientific dose-response relationships between noise-exposure levels and various community responses, predominantly “community annoyance.” This is also the
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
Problem Statement Vibration propagation through the ground is physically very similar to the propagation of noise through the air. Vibration and noise are similar in other respects as well; however,
Problem Statement The operation of steel-wheeled transit vehicles on steel rails may develop short-pitch corrugation of the rails. The interaction of the wheels rolling over the corrugated rails generates noise
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
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
Problem Common roadway construction practices impact our environment. Impacts to streams and rivers have been monitored and are considered in the design and construction process. Efforts have been made to reduce other
Problem The transportation sector is vital to the economy of the United States. It provides the critical links between industries and to their customers and it is the network for
Problem In some locations, particularly the U.S. Gulf, transportation infrastructure will remain at risk due to persistent weaknesses in natural systems, such as sea-level rise coupled with shoreline subsidence and
Problem Statement An ever-growing interest in the promise of high efficiency/low greenhouse gas-emittingvehicles has led to a variety of efforts to accelerate their commercial introduction. All the major original equipment
Problem Statement A low carbon fuel standard (LCFS) sets a target to reduce the greenhouse gas (GHG) intensity of transportation fuels. Fuel providers must reduce the GHG intensity of their
TERI Administrator Note – Similar research topic funded as SHRP C09 – Incorporating Greenhouse Gas Emissions Into the Collaborative Decision-Making Process (Completed Feb 2011) RESEARCH PROBLEM STATEMENT State departments of
Problem States and metropolitan planning organizations (MPOs) are developing and evaluating transportation plans and programs on an ongoing basis. At the same time, many of them are also developing climate action
Problem States and metropolitan planning organizations (MPOs) are developing and evaluating transportation plans and programs on an ongoing basis. There is increasing awareness that future climate conditions may affect the resilience
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,
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
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
Problem There are several steps in the freight processing system, from warehousing, manufacture, and distribution that generate trips, usually by truck, between these stages. Often import material is in a disaggregated
The southeastern United States is the center of biodiversity for freshwater fishes and mussels in North America. Many of these species are imperiled and one of the leading causes of imperilment
RESEARCH PROBLEM STATEMENT In recent years, coal-fired power plants are more frequently utilizing air pollution control technologies that result in fly ash with elevated concentrations of ammonia (referred to herein
This research project will apply a transport equation to predict noise distributions in long spaces/enclosures when multiple sources are present. Potential applications are transportation infrastructures such as tunnels, subway stations,
Project Description: With culverts installed in numerous locations throughout southern California to allow for hydrological flow under roadways, they also provide the secondary function of vagile species connectivity to habitat
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
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
General Scope of Work: Task 1: Literature Review. Complete a literature review to determine the sources of zinc in highway runoff. The literature review should also attempt to determine if
A weaving segment on freeway is one of vehicle conflict hot spots. Many studies have been focused on the safety and mobility performance of the weaving segment, in terms of
Recent studies demonstrated that vehicle toxic emissions (e.g. CO, NOx, and HC) are sensitive to geometric road design, which is also associated with driving stress and in-vehicle noise levels. For
The transportation conformity regulation (40 CFR Parts 51 and 93) has been amended repeatedly since “Conformity provisions first appeared in the Clean Air Act Amendments [CAA] of 1977 (Pub. L.
The objectives of this research will be to better understand the contribution of extended idling (hoteling) by heavy-duty diesel trucks to state and local emissions inventories, and to assist local
Connectivity among populations and habitats is important for a range of ecological processes, including gene flow, migration between summer and winter range, demographic rescue, dispersal, range expansion, and population persistence.
Research is needed to consolidate NCHRP and other research results related to highway stormwater management, update NCHRP research, document the efforts of various DOTs to comply with stormwater requirements, and
Air quality project-level analyses (PLAs) that state Departments of Transportation (DOTs) are required to prepare for purposes of the National Environmental Policy Act (NEPA) and the EPA transportation
Directional fencing is an important component of wildlife crossing designs. When successful, fencing can guide animals to a safe crossing location and significantly reduce road mortality. Most current research is
BACKGROUND There is a need to investigate the effects of artificial light on a growing list of bats, birds, insects, fish, and other members of the environmental community which may
The FHWA’s Traffic Noise Model (TNM) software must be used to analyze noise impacts on federally funded highway projects. TNM analysis is based upon a 25-year-old vehicle noise reference emission
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