SmartWay Transport

SmartWay Truck Emissions Test Protocol

Recognizing that advancements in heavy-duty vehicle technology offer opportunities for cleaner, more fuel-efficient medium and heavy-duty vehicles, EPA’s SmartWay Transport Partnership is collaborating with the transportation industry to develop a SmartWay Truck Emissions Test Protocol that better quantifies the benefits of various heavy vehicle designs and technologies.  EPA seeks to create a test protocol to compare the relative emissions and fuel-efficiency of heavy-duty vehicles.  However, without a standard, objective, stand-alone test method, it is difficult to develop a common understanding of how to assess criteria air pollutants, greenhouse gases, and fuel-efficiency of heavy-duty vehicles, including vehicles with hybrid powertrain, aerodynamic configuration, and other advanced vehicle designs and components.

Such information can assist the Agency in establishing performance-based eligibility criteria for the next generation of SmartWay trucks, and to quantify the benefits of hybrid vehicles for vehicle-based certification.

Such a standard methodology does not currently exist so EPA has developed this working draft SmartWay Truck Emissions Test Protocol (PDF) (76 pp, 900K, EPA-420-P-07-003, November 2007) as a starting point for discussion among stakeholders. This working draft is a first step toward a performance-based specification that would be technology-neutral, able to quantify a broad range of heavy vehicle configurations and applications, and able to measure technical innovations as they emerge.  EPA is soliciting additional information and critical input to address areas of uncertainty and clarify outstanding issues.  

SmartWay Truck Emissions Test Protocol Working Draft: Technical Presentations from the March 19-20 Workshop and Call for Written Comments

EPA’s SmartWay Transport Partnership is collaborating with the transportation industry and other interested stakeholders to develop a SmartWay Truck Emissions Test Protocol that quantifies the benefits of various heavy vehicle designs and technologies. Working draft of the protocol: SmartWay Truck Emissions Test Protocol (PDF) (76 pp, 900K, EPA-420-P-07-003, November 2007)

EPA held a public workshop in Washington, DC, on March 19-20, 2008, to discuss the protocol.  The purpose of the workshop was to present the current working draft, provide highlights of comments received to date, and to invite further collaboration with interested parties to share data and conduct tests and analyses to further develop and validate the test procedure. The Agency appreciates the valuable oral and written comments it received before and during the workshop.

To provide for the broadest public input, EPA accepted comments, test data, analyses, and other input through April 30, 2008.

For more information of the truck emissions testing protocol, please contact:

Joseph Bachman (bachman.joseph@epa.gov)
USEPA Headquarters
Ariel Rios Building
1200 Pennsylvania Avenue, N. W.
Mail Code: 6406J
Washington, DC 20460

or

Cheryl Bynum (bynum.cheryl@epa.gov)
USEPA - NVFEL
2000 Traverwood
Ann Arbor, Mich. 48105

Comments that pertain to heavy-duty hybrid vehicle testing may be referred to:

Han Lim (lim.han@epa.gov)
USEPA Headquarters
Ariel Rios Building
1200 Pennsylvania Avenue, N. W.
Mail Code: 6405J
Washington, DC 20460

The technical presentations given by EPA staff at the March 19-20, 2008, public workshop can be accessed via the links below:

Summary of Draft Test Protocol (PDF) (13 pp, 112K)

SmartWay Testing: Initial Truck Testing (PDF) (10 pp, 249K)

EPA Planned Hybrid Truck Testing at Environment Canada (PDF) (14 pp, 82K)

Draft Test Protocol Methodology (PDF) (16 pp, 404K)

Determining Track-to-Chassis Dynamometer Correlation PDF) (12 pp, 76K)

Drive Cycle Development (PDF) (24 pp, 351K)

Metrics and Modeling General Topics (PDF) (6 pp, 62K)

Additional testing and research publications are also available.