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  2. Verified Technologies for SmartWay and Clean Diesel

Formerly SmartWay Verified List for Aerodynamic Devices

  • Learn about
  • Verified List
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  • Formerly verified list
Help

For more information about the terms used in this table, view the "Learn about" tab.

For help on using the table below:
  • View Table Instructions

If you are a device manufacturer and believe that your device should not be archived, please contact EPA SmartWay at:

  •  SmartWay_Transport@epa.gov.

The devices listed below were tested and verified by SmartWay but are no longer actively verified. Legacy devices may still be in use but may not be currently manufactured. Devices sold after the delisting date are not verified. 

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IMPORTANT NOTES:
  • Please read: EPA's Disclaimer on Verified Technologies
  • These devices have been archived due to:
    • Product discontinuation; or
    • Lack of updates from the device manufacturer; or
    • Other reasons 
  • Any in-use units of these devices are still considered SmartWay verified.
Device Name (date of delisting if applicable)Fuel Savings CategoryDevice CategoryTesting Method
Aerofficient Aero-slide side fairing system (with rearmost telescoping panel) (model  ASFS)5%SkirtSmartWay Verifications Pre-2014
American Trailer Skirts American Trailer Kit5%SkirtSmartWay Verifications Pre-2014
Fleet Engineers Advanced Air Slipper (#034-02290)5%SkirtSmartWay Verifications Pre-2014
Ridge Corp. GreenWing RAC00035%SkirtSmartWay Verifications Pre-2014
Sweet Bottom Trailer Skirt5%SkirtSmartWay Verifications Pre-2014
Transtex 19-36 Skirt4%SkirtSmartWay Verifications Pre-2014
Transtex 21.6-36 Skirt4%SkirtSmartWay Verifications Pre-2014
Transtex rear trailer fairing1%SkirtSmartWay Verifications Pre-2014
Transtex Edge Flaps (delisted 11-09-23)1%Splash GuardCoastdown (2014)
Carrier Transicold Belly Fairing4%SkirtSmartWay Verifications Pre-2014
Fleet Engineers Extended Air Slipper4%SkirtSmartWay Verifications Pre-2014
FreightWing belly fairing Trailer Skirts4%SkirtSmartWay Verifications Pre-2014
Ridge Corp. GreenWing RAC00024%SkirtSmartWay Verifications Pre-2014
Nose Cone Mfg. Co. AeroTrak VG Pro5%Other Trailer DeviceSmartWay Verifications Pre-2014
SA Concepts AeroSmart Trailer Skirt4%SkirtSmartWay Verifications Pre-2014
Aerodynamic Trailer Systems (ATS) dual lobe boat tail1%TailSmartWay Verifications Pre-2014
Carrier Transicold Gap Fairing1%Gap ReducerSmartWay Verifications Pre-2014
Nosecone "Nose 3-D" Gap Reducer (consists of top and side units sold as one piece of equipment)1%Gap ReducerSmartWay Verifications Pre-2014
 

Verified Technologies for SmartWay and Clean Diesel

  • Clean Diesel Technology
    • Learn About
    • Verified List
    • Verification Process
    • Manufacturer Contact List
  • SmartWay Technology
    • For Trucks & School Buses
      • Designated Tractors
      • Designated Trailers
      • Refrigerated Trailers and TRU Calculator
      • Aerodynamic Devices
      • Idling Reduction
      • Tires
    • For Locomotives
    • For Marine Technology
Contact Us about Verified Technologies for SmartWay and Clean Diesel
Contact Us about Verified Technologies for SmartWay and Clean Diesel to ask a question, provide feedback, or report a problem.
Last updated on October 26, 2026
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