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Verified Technologies for SmartWay and Clean Diesel

Testing for SmartWay Verification of Aerodynamic Devices

Follow these steps for the testing part of the verification process:

""Choose one or more test method(s).

Once EPA has a good understanding of the technology, manufacturers can choose from one or more of the three test methods below.

Track Testing

Learn more about:

Wind Tunnel Test Procedure

Coast Down Testing

Coast Down testing uses conditions that more directly isolate and measure air resistance.


Number TwoDevelop a test plan for EPA approval.

•  Choose a test facility for the chosen test method;
•  EPA will supply test protocols and assist in test plan development; and

•  Finalize test plan for EPA approval.

""Conduct testing.

The device manufacturer is responsible for:
•  Ensuring that testing is conducted in accordance with EPA SmartWay protocols;

•  Immediately reporting any issues to EPA.

""If necessary, EPA may observe some or all of the testing.

""Compile and submit a test report to EPA.

Once testing is complete, the manufacturer must work with the testing facility to submit a report that includes the following:

""•  Description of the test facility and test protocol;
•  Photos of test vehicles and devices tested;
•  Name(s) of device(s) tested; and

•  All applicable data and descriptions of analyses.

""Go to the Evaluation phase.

Once all data, test reports, and associated documents are submitted to EPA, the device will be evaluated in the final phase of verification.  
•  Click this link or the tab above: Evaluation for SmartWay Verification