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Partner Resources:
Technology Research and Publications

General Technology Overviews

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Truck and Rail Technologies

EPA Technical Bulletins: A Glance at Clean Freight Strategies:

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Drayage Fleets

EPA Technical Bulletins: A Glance at Clean Freight Strategies for Drayage:

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Research Reports

Fuel Economy and Emissions Research

Truck Idling Research

EPA was one of the first organizations to comprehensively examine the emissions impacts from idling trucks. EPA's idling study was conducted over a two year period at the U.S. Army's Aberdeen Test Center in Aberdeen, Maryland. A short introductory study with five tests was conducted in June 2001, and a larger study with 37 tests was conducted in May 2002. In the larger study, EPA worked with Oak Ridge National Laboratory and Rowan University with funding from the New Jersey Department of Transportation.

EPA is also interested in the health impacts of idling engines on truck drivers. In July 2004, EPA funded an interagency agreement to study the truck cab emissions concentrations inside trucks at a large truck stop in Knoxville, TN. The interagency agreement was awarded to the Oak Ridge National Laboratory as noted in this press advisory. Partners include Oak Ridge National Laboratory and the University of Tennessee. This project is part of the Watt Road Environmental Laboratory Initiative which is on I-40 in Knoxville, Tennessee.

In November 2005, the University of Tennessee published its final report (PDF) (154 pp, 8.8 MB) that measures the air pollutant concentrations inside and outside of a truck cab under conditions of extended idling at a truck stop. For more information on this study, contact Dr. Wayne Davis, phone: (865) 974-5321.

Motor Coach Study

In the summer of 2005, EPA conducted a field observation of motor coach idling in Washington, DC. The purpose of this study was to observe and report idling behavior of motor coaches in various zones in and around Washington, DC. Our goal is to work with state and city officials, motor coach companies, and associations to reduce motor coach idling emissions. These emission reductions will occur due to education, more effective laws, and strategies and technologies that reduce idling while maintaining the needs of motor coach buses, their passengers, and the general public.

On February 15, 2007, EPA will host a workshop for interested participants to discuss ways to reduce motor coach idling emissions in Washington, DC and other metropolitan cities. If you are interested in participating, please contact Paul Bubbosh at (202) 343-9322, email: bubbosh.paul@epa.gov.

Motor Coach Idling Field Observation Study for Washington, DC, Metro Area: (PDF) (44 pp, 414 KB) A study designed to observe and report motor coach idling behavior and better understand the effectiveness of idling reduction laws on these vehicles.

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State or Local Guidebook to Diesel Idling Reduction

A joint publication of the New York Planning Federation, the New York State Energy Research and Development Authority, and the EPA SmartWay Transport Partnership, A Municipal Official's Guide to Diesel Idling Reduction in New York State (PDF) Exit EPA Disclaimer (45 pp, 1,042 KB, September 2006) presents basic information and practical solutions to reduce truck engine idling. This guidebook can assist state and local officials in understanding the issues, alternative technologies and approaches, and making sound state and local land use decisions that can contribute towards reducing impacts of engine idling.

Idling Reduction Demonstration Projects

Since 2000, EPA has funded several idle reduction demonstration projects under the authority of the Clean Air Act, Section 103(b). Below is a brief description of each project.

 

Other idle reduction projects have also published case studies:

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Policy Guidance Documents

Idling Policies: A reduction in long-duration idling will reduce emissions of nitrogen oxides, carbon dioxide, and particulate matter. For state and local air quality planners and transportation officials, these emission reductions can be used in air quality plans such as state implementation plans, transportation and general conformity, and new source review offsets. In January 2004, EPA published three guidance documents about quantifying and using truck and locomotive idle emission reductions in air quality plans.

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SmartWay Transport is maintained by EPA's Office of Transportation and Air Quality (OTAQ).


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