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Verified Technologies for SmartWay and Clean Diesel

SmartWay Designated Tractors and Trailers

Finding the right truck is critical to maximizing freight efficiency – using a SmartWay designated tractor and trailer can reduce fuel use by up to 20 percent 2,000 to 4,000 gallons of diesel per year!

SmartWay and SmartWay Elite Trailers

There are two levels of designation for trailers:
  1. SmartWay; and
  2. SmartWay Elite

Both trailers use verified low rolling resistance tires – the difference is the level of aerodynamics and the resulting total fuel savings. 

The specifications are summarized in the table below:

  SmartWay Trailer   SmartWay Elite Trailer
Tires Verified Low Rolling Resistance Tires (1% fuel savings)
Aerodynamic Devices One or more devices
(at least 5% fuel savings)
Combination of two or more devices
(at least 9% fuel savings)
Total Fuel Savings 6% or more 10% or more

SmartWay Designated Trailer with Aerodynamic and Tire Components:

SmartWay Designated Trailer Sample

Finding SmartWay Designated Trailers

  1. Fleets can retrofit an existing trailer with:
    1. SmartWay Verified Tires and;
    2. Aerodynamic Devices.
    3. Check Examples of SmartWay Designated Trailer Configurations for more information)
  2. Fleets can also purchase a new trailer with aerodynamic packages from the following trailer manufacturers:  
Great Dane Trailers
Hyundai Translead
Manac Inc.
Stoughton Trailers, LLC
Strick Trailers, LLC
Utility Trailer Manufacturing Company
Vanguard National Trailer Corporation
Wabash National Corporation
Wilson Trailer Co.

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SmartWay Tractors – in Both Sleeper and Day Cab Configurations

SmartWay tractors have been demonstrated to be the most fuel-efficient Class 8 models for long-haul and regional goods movement. SmartWay Tractors can be sleeper or day cab configurations. See below for the required components of the SmartWay Designated Tractor:

SmartWay Designated Tractor Sample
Component Specifications
  • Current model year engine designated to meet U.S. EPA
    NOx/PM/GHG emission requirements (meaning that the engine's model
    year should match the vehicle's model year. So a 2019 tractor should have a 2019 engine.)
  • Aerodynamically integrated high-roof fairing or cab compartment
  • Aerodynamic mirrors
  • Aerodynamic bumper
  • Tractor side extending fairings (also called tractor gap reducers)
  • Fuel tank fairings (also called chassis fairings)
  • SmartWay verified low-rolling resistance steer and drive tires
    (duals or singles) (aluminum wheels optional)

Idle Reduction

Sleeper and day cabs must have automatic engine shut-off (AES) capability.

For sleeper cabs, manufacturer availability of at least one option providing eight hours or more of engine idle-free auxiliary power, heat, and/or air conditioning using: 

  • Auxiliary power unit or generator set
  • Fuel operated heater
  • Battery air conditioning system
  • Thermal Storage System

For day cabs, manufacturers are encouraged to provide additional idle reduction options that meet regional-haul needs.

To Designate a Tractor

  • Ensure that your tractors have the above features
  • Contact with your company's name and tractor(s) details

Finding SmartWay Tractors

The following tractor models are SmartWay Designated in both sleeper and day cab configurations, when properly equipped.

Manufacturer Tractor Model Model Year
Daimler Cascadia 2008, or newer
Daimler Century Class S/T 2008, or newer
Daimler Columbia 2008, or newer
International LT 2016, or newer
Kenworth T2000 2008 - 2011
Kenworth T660 2008, or newer
Kenworth T680 2012, or newer
Kenworth T700 2011 or newer
Mack Pinnacle 2008 - 2016
Navistar 9200i 2007 - 2009
Navistar LoneStar 2008, or newer
Navistar ProStar, ProStar+ 2007, or newer
Peterbilt 384 2010, or newer
Peterbilt 387 2008 - 2011
Peterbilt 386 2008, or newer
Peterbilt 587 2011, or newer
Peterbilt 579 2012, or newer
Volvo VN 630 2007, or newer
Volvo VN 670 2007, or newer
Volvo VN 780 2007, or newer
Western Star 5700XE 2016, or newer

The following tractor models are SmartWay Designated only in day cab configurations, when properly equipped.

Manufacturer Tractor Model Model Year
Mack Anthem 2017, or newer
Volvo VNL 300 2017, or newer
Volvo VNR 300 2017, or newer

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  • EPA does not endorse the products or services of commercial companies. Any reference to a specific commercial product or service by trade name, trademark, manufacturer, company, or otherwise does not constitute or imply the endorsement or recommendation of EPA.
  • Fuel savings estimates are based upon extensive research, fleets, and the input of industry and scientific associations.  However, your increase in freight efficiency will depend upon several factors including your operations and the fuel-efficiency of your starting vehicles.
  • All equipment must be maintained per manufacturer’s service recommendations and replaced when necessary.

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