Jump to main content or area navigation.

Contact Us

SmartWay

smartway logoSmartWay Technology

About the SmartWay Technology Program

EPA's SmartWay Technology program develops test protocols, reviews strategies and verifies the performance of vehicles, technologies and equipment that have the potential to reduce greenhouse gases and other air pollutants from freight transport. The program establishes credible performance criteria and reviews test data to ensure that vehicles, equipment and technologies will help fleets improve their efficiency and reduce emissions.

Coming Soon!  Web updates for the NEW SmartWay-designated Trailer and SmartWay-verified aerodynamic technology programs.  EPA is expanding these programs to include refrigeration trailers, more testing options, improved protocols, and new “Elite” level. 
Please check back soon for details!

"You will need Adobe Reader to view some of the files on this page. See EPA's PDF page to learn more."

SmartWay Verified Technologies

EPA has evaluated the fuel saving benefits of various devices through grants, cooperative agreements, emissions and fuel economy testing, demonstration projects and technical literature review. As a result, EPA has determined the following types of technologies provide fuel saving and/or emission reducing benefits when used properly in their designed applications:

  • Aerodynamic Technologies
  • Idle Reduction Technologies
  • Low Rolling Resistance Tires
  • Retrofit Technologies

Within each of these categories, EPA has verified specific products. EPA continues to evaluate and verify new products. Although EPA has verified the fuel saving and/or emission reducing benefits of the listed products, EPA does not endorse the purchase of products or services from any specific vendor. EPA urges you to compare products, services, and prices before making your purchase. EPA cannot confer verification on any product not listed below.


General Grant Eligibility Note: Equipment purchased with funds from National Clean Diesel Emission Reduction Program (DERA) grants must be on the SmartWay verified list below) or on the verified diesel retrofit technologies list at the time of acquisition to be eligible. These lists are regularly updated as new products are verified.

EPA-designated SmartWay Tractors and Trailers also qualify as "vehicle replacements" for purchase using DERA funds. EPA-designated SmartWay Tractor and Trailers are equipped with SmartWay-verified technologies at point of sale.

Verified Aerodynamic Technologies

Aerodynamic technologies minimize drag and improve air flow over the entire tractor-trailer vehicle. Aerodynamic technologies include gap fairings that reduce turbulence between the tractor and trailer, side skirts that minimize wind under the trailer, and rear fairings that reduce turbulence and pressure drop at the rear of the trailer. Using fairings in combination with one another (or, in a few cases, when used alone) have the potential to provide an estimated 5 percent or greater reduction in fuel use relative to the truck's baseline, when used in conjunction with an aerodynamic tractor on long haul Class 8 trucks, in highway type operation. This reduces NOx emissions, saves up to 800 gallons of fuel, and eliminates over nine metric tons of greenhouse gas emissions per year.

EPA has verified the following categories of aerodynamic technologies:

  • Trailer Gap Reducer and Trailer Side Skirts (used in combination with one another); Trailer Boat Tail and Trailer Side Skirts (used in combination with one another);
  • Advanced Trailer End Fairing; and,
  • Advanced Trailer Skirts.

To be eligible for DERA funding, aerodynamic technologies must be on EPA's SmartWay verified technology list

Click the links below to view the trailer aerodynamic technologies that are SmartWay verified:

Trailer Gap Reducers
Trailer Gap Reducer (should be used with side skirts) - estimated fuel savings: 1 percent or greater.
  • Carrier Transicold Gap Fairing
  • FreightWing Gap Reducer
  • Laydon Composites Gap Reducer
  • Nosecone "Nose 3-D" Gap Reducer (consists of top and side units sold as one piece of equipment)
Trailer Boat Tails
Trailer Boat Tail (this or the gap reducer should be used with side skirts) — estimated fuel savings: 1 percent or greater.
  • Aerodynamic Trailer Systems (ATS) dual lobe boat tail
  • AeroVolution inflatable boat tail
  • ATS SmartTail
  • Kodiak Innovations Bumper Bullet
  • Slipstreem Aerodynamics Showtime 100 Trailer End Fairing
  • SOLUS Air Conqueror Package SP: 4.9 (WheelCover/AftSkirt/Tail1)
  • SOLUS Air Conqueror Package SP: 3.6 (WheelCover/AftSkirt/Tail2)
  • SOLUS Air Conqueror Package SP: 3.4 (WheelCover/AftSkirt/Tail3)
  • SOLUS Air Conqueror Package SP: 2.4 (WheelCover/AftSkirt)
  • Transtex rear trailer fairing
Trailer Side Skirts
Trailer Side Skirts (should be used with gap reducer or boat tail) — estimated fuel savings: 4 percent or greater.
  • Carrier Transicold Belly Fairing
  • Fleet Engineers Extended Air Slipper
  • FreightWing belly fairing Trailer Skirts
  • Kodiak Innovations AirPlow
  • Laydon Composites Trailer Skirts 6 or 7 panel
  • Ridge Corp. GreenWing RAC0002
  • SA Concepts AeroSmart Trailer Skirt
  • SG Engineering Flow-Pod system
  • Silver Eagle Mid-length Skirt
  • Silver Eagle Mini-skirt
  • SOLUS Air Conqueror Split Skirt SSR I (12-0-6)
  • SOLUS Air Conqueror Split Skirt SSR II (12-2-6)
  • SOLUS Air Conqueror Split Skirt SSA I (12-4-6)
  • SOLUS Air Conqueror Split Skirt SSA II (14-2-6)
  • Stormblok Ekostinger Under Trailer Arrow
  • TNJ Enterprises Radius Trailer Skirt
  • Transtex 19-36 Skirt and 21.6-36 Skirt
  • Utility Trailer USS 120
Advanced Trailer End Fairing
Advanced Trailer End Fairing (this can be used with or without other fairings) — estimated fuel savings : 5 percent.
  • ATDynamics TrailerTail rear trailer fairing
  • ATDynamics TrailerTail Trident
  • ATS Integrated Automated System (WindTamer with SmartTail)
  • Avantechs Inc VorBlade Wing (with Crosswinds Mitigator subsystem)
  • Nose Cone Mfg. Co. AeroTrak VG Pro
  • SG Engineering Flow-Pod with Tail-Pod system
  • SmartTruck UT-1
  • SmartTruck UT-6
Advanced Trailer Skirt
Advanced Trailer Skirt (this can be used with or without other fairings) — estimated fuel savings: 5 percent.
  • Aerofficient Aero-slide side fairing system (with rearmost telescoping panel) (model  ASFS)
  • Aerofficient Fixed side fairing (with landing gear wrap panel) (model  FFGW)
  • Aerofficient Fixed side fairing (with landing gear toe in panel) (model  FFTI)
  • AeroTech Fleet Products Bracketless Trailer Skirt
  • Airflow Deflector Deflector
  • American Trailer Skirts American Trailer Kit
  • ATDynamics-Transtex Trailer Side Skirts
  • Atlantic Great Dane AeroGuard Side Skirt (AGD400-43)
  • Brean Marketing, Inc. ArrowShield
  • Carrier Transicold Aeroflex Fairing
  • CBS SmartWind Aerodynamic Trailer Skirt
  • Fleet Engineers Advanced Air Slipper (#034-02290)
  • Fleet Engineers Aero Saver Trailer Skirt
  • FreightWing Aeroflex Trailer Skirt
  • Hyundai Translead EcoFairing V-1, V-2D, and V-2R Skirts
  • Kodiak Innovations AeroCurtain
  • Laydon Composites Trailer Skirt 8 panel
  • Laydon Composite Classic 7-Panel Trailer Skirt, Product code TRSK700SA
  • Laydon Composites Curve
  • Laydon Composites Hybrid 248 (Intermodal) Trailer Skirt
  • Laydon Composite Hybrid 259 Trailer Skirt, Product code TRSK710SA
  • Prime Inc. EcoFeather Trailer Side Skirt
  • Ridge Corp. GreenWing RAC0003
  • Ridge Corp. GreenWing RAC0012 - Front Radius
  • Ridge Corp. GreenWing RAC0031 - Straight Angle
  • Silver Eagle Aero Saber
  • SOLUS Air Conqueror Performance Split Skirt SSP I (14-0-6)
  • SOLUS Air Conqueror Performance Split Skirt SSP II (16-0-6)
  • SOLUS Air Conqueror Performance Split Skirt SSP III (18-0-6)
  • TrailerBlade Model 715
  • Sweet Bottom Trailer Skirt
  • Transfoil Systems Transfoil
  • Transtex 1932H Skirt
  • Transtex 23-30 Skirt
  • Utility Trailer USS 120A
  • Utility Trailer USS 120A-4
  • Utility Trailer USS 160
  • Wabash DuraPlate AeroSkirt TL273
  • Wabash DuraPlate AeroSkirt TL Straight
  • Wabash DuraPlate AeroSkirt TL
  • Windyne Flex-Fairing

Top of Page

Verified Low Rolling Resistance Tires

EPA has determined that certain tire models can reduce NOx emissions and fuel use by 3 percent or more, relative to the best selling new tires for line haul class 8 tractor trailers. These improvements are achieved under the following conditions:

  1. Tires are used on the axle positions stated on the list below.
  2. Verified low rolling resistance tires are installed on all of the axle positions of the tractor and trailer.
  3. All tires must be properly inflated according to the manufacturer's specifications.

The following low rolling resistance tires are SmartWay verified when used on class 8, line-haul tractor trailers:

New Tires

Brand
Steer
Drive
Trailer
Advance GL283A L.E.T., GL282A L.E.T. GL283A L.E.T., GL293D L.E.T., GL282A L.E.T., GL 266D L.E.T. GL268D L.E.T. GL285T L.E.T.
Aeolus HN267, Ultra HN277 HN308+ HN808
Akuret DSR266, DSR116, A425 DSR266, DSR728, DSR 355, DSR768, A425 DSR266, DSR116, DSR669
Annaite 600 600  
Aosen DSR266, DSR116 DSR728, DSR266, DSR355, DSR768 DSR266, DSR116, DSR669
Arisun CR989, AS600 CM983, AD737 CR915, AT500
Atlas STRD09e+, AP100e+, APW09e+ (315/80R22.5 only), AT08CCe+ (11R22.5 and 11R24.5 only) DRV09e+, AT08CCe+ (11R22.5 and 11R24.5 only) TR09e+
Aurora UFO3, UF04 UZ02, UZ03 UFO7
Barkley BL201,BL202 BL801, BL802 BLT01
Benchmark F816e+, LLA08e+ (11R22.5 and 11R24.5 only) LLA08e+, LLD37e+, LLA08e+ (11R22.5 and 11R24.5 only), BDL817 BTL811
BF Goodrich ST244, ST230 ST244, DR454 TR144
Blacklion  BF155 FST, BF156 FST   BT166 FST
Boristar BS636 BD787 BT838
BOTO BT 212, BT212N BT556  
Bridgestone R280, R287, R287A, R283 Ecopia, R268 Ecopia M720, Greatec M835 Ecopia, Greatec, M710 Ecopia, S803Z, S718WZ, S718YZ, R268 Ecopia, M760 Ecopia Greatec R135 Ecopia, R195, R197 Ecopia, S197
Briway BS636 BD787 BT838
Continental HSL1 Coach, HSL2 (replaces HSL), HSL2 ECO Plus, HSR, HSL2+ Eco Plus, HSR1, HSR1 ECO Plus, HSR2, HSR2 ECO Plus, HSR2 SA HSL1 Coach, HDL ECO Plus, HDL2 ECO Plus, HDL2 DL ECO Plus, HDR, HDR1 ECO Plus, HSR, HSR1, HSR1 ECO Plus, HSR2, HSR2 ECO Plus, HSR2 SA, Eco Plus HD3, Hybrid HD 3, HDR2 Eco Plus HTL ECO Plus, HTL1
Crosswind F816e+, LLA08e+ (11R22.5 and 11R24.5 only)  LLD37e+, LLA08e+ (11R22.5 and 11R24.5 only) , LDL817  T810e+, LTL811
Diamondback DBSS6+ DBSD8  
Dongfeng DSR266, DSR116 DSR728, DSR2669, DSR116, DSR355, DSR768 DSR266, DSR116, DSR 66
Double Coin FR605, RR680 FD405, FD425, RR680 FT105, FT125
Doublestar DSR266, DSR116 DSR728, DSR266, DSR355, DSR768 DSR266, DSR116, DSR669
Dunlop Tire SP384 FM SP456 FM SP193 FM
Duraturn DA20 DA20
Dynacargo Y201 Y201
ECED BT212, BT212N BT556  
Falken RI109 Ecorun, RI128 Ecorun BI887, BI830 RI119 Ecorun
Fargo FG116 (11R22.5 only), FG216 FG516 FG120 (11R22.5 only)
Firestone FS507 PLUS, FS591 FD695 PLUS, FD691 FT455 PLUS, FT491
General S371, S580, S581 D660, S371, S580, S581 ST250
Geostar G300, G305SW N/A N/A
Gladiator QR55ST-E QR99PD-E QR25TR-E
Goodride CR989 CM983, CM980 CR915
Goodyear G399 Fuel Max, G399A Fuel Max, G662 Fuel Max G305 Fuel Max AT, G392 SSD, G392A Fuel Max, G572 Fuel Max, G572A Fuel Max, G572 1AD G316 LHT Fuel Max, G316 Fuel Max DuraSeal, G394SST
GT Radial GSL213 FS GT669+ FS GT979 FS
Hankook AH24, AL07+, AL11 AH24, DL11, Z35A, e³WiDE DL07 TL 01, e³ WiDE TL07
Hercules H-801, H-802, H502, H902 (11R22.5 only) H-702, H-703 H-903
Hilo 600 600  
Hunter   HT529  
Infinity LLA08e+ (11R22.5 and 11R24.5 only) LLA08e+ (11R22.5 and 11R24.5 only) , IDL817 ITL811
Ironman I-601, I-109 I-208, I-390 I-460
Jinyu FJY588 FST    
Kumho KLS02e, KRS02e KLD01e, KLD02e KLT02e
Leao LLF16e+, F816e+, LLF02e+ (315/80R22.5 only), LLA08e+ (11R22.5 and 11R24.5 only), AFE823, LLA18e+ (385/65R22.5 only), LAL800e+ (11R22.5 only) LLA08e+ (11R22.5 and 11R24.5 only), ADE 822, LLA18e+ (385/65R22.5 only), LDE822 (11R22.5 only), LAL800e+ (11R22.5 only), LLD37e+, ADE837, ADL817 ATE821, LTE 821, T810e+,ATL811
Linglong F816e+, LLF16e+, LFE823, LLF02e+ (315/80R22.5 only), LLA08e+ (11R22.5 and 11R24.5 only), LLA18e+ (385/65R22.5 only), LAL800e+ (11R22.5 only)

LLA08e+ (11R22.5 and 11R24.5 only), LLA18e+ (385/65R22.5 only), LDE822 (11R22.5 only), LAL800e+ (11R22.5 only), LLD37e+, LDE837, LDL817

LTE 821, T810e+,LTL811
Long March LM116 (11R22.5 only), LM 216 LM516 LM 120 (11R22.5 only)
Michelin X Coach XZ, XZA3, XZA3+, XZA2, XZA1+, XZA2 Energy, X Mutli Energy Z XDA Energy, XDA3, X-One XDA, X-One XDN2, X-One XDA Energy, X Multi Energy D, X Line Energy D, X-One Line Energy D, X Coach XZ, XZA3+, XZA 1+, XZA2 Energy, X Mutli Energy Z XTA Energy, XT1, X-One XTA, X-ONE XTE, X Line Energy T, X-One Line Energy T
Milestar BS626SW, BS627SW BD757SW  
Milever SFR03, SAH01 SFR03, SAH01 N/A
Regul GL282A L.E.T., GL283A :L.E.T. GL282A L.E.T., GL283A L.E.T, GL266D L.E.T. GL285T L.E.T.
Roadlux R116 (11R22.5 only), R216 R516 R120 (11R22.5 only),
Roadmaster (Cooper) RM180, RM185 RM851 RM871
Roadone LLA08e+ (11R22.5 only), F816e+ LLA08e+ (11R22.5 only), LLD37e+, , LDL817 LTL811
Roadpro S180 FS R610FS R910FS
Roadstar RS301E
RoadX ST355 R³ CD 880-R³ TR 528 R³
Runking BT212, BT212N BT556  
Sailun S605 EFT, S606 EFT S768 EFT, S753 EFT S622 EFT
Samson GL283A L.E.T., GL282A L.E.T. GL283A L.E.T., GL293D L.E.T., GL282A L.E.T., GL266D L.E.T., GL 268D L.E.T. GL 285T L.E.T.
Sumitomo ST778SE, ST778A SE ST938SE ST710SE
Sunny SFR03, SAH01 SFR03, SAH01 N/A
Super Cargo SC02, S100, S300 SC08 SC05 (11R22.5 only)
Synergy AP400, SP100 DP200  
TBB GR100, GR110 GR320  
Topstar DSR266, DSR116 DSR728, DSR266, DSR355, DSR 768 DSR266, DSR116, DSR 669
Toyo Tires M137, M177 M657, M650 M157
Triangle TRS01 TRD01 N/A
Westlake CR989, CR960A CM983, CM980 CR915
Yokohama RY617, RY023, 103ZR, 101ZL, RY087 703ZL, TY517mc2, TY517 (445/50R22.5 only), 709ZL RY407, RY587, RY587mc2
Wanli SFR01 (315/80R22.5 and 11R22.5 only), SFR03, SAH01 SFR03, SAH01 N/A
Wind Power WSR36, WSL 61 WDR31  
Zeetex HT14 extra TZ12 extra HT16 extra (11R22.5 only)

Verified Low Rolling Resistance Retread Technologies

EPA has determined that certain retread technologies can reduce NOx emissions and fuel use by 3 percent or more, relative to the best selling retread technologies. These improvements are achieved under the following conditions:

  1. Verified retread technologies are used on both the drive and trailer axles.
  2. The retread technologies are used on the axle positions shown in the table below.
  3. Verified low rolling resistance steer tires are used.
  4. All tires must be properly inflated according to the manufacturers specifications.

The following low rolling resistance precure technologies are SmartWay verified when used on class 8, line-haul tractor trailers:

Precure Tread

Brand
Drive
Trailer
Bandamatic BTM Smartech TRA Smartech
Bridgestone/Bandag FuelTech Drive, B710 FuelTech, B835 FuelTech FuelTech-Trailer, B197 FuelTech, B135 Fuel Tech, FCR-Trailer
Continental HDL Eco Plus, HTL Eco Plus, HDR1 EP, HDR2 Eco Plus, HDL2 Eco Plus HTL Eco Plus
Daeho DH 915 N/A
Goodyear G305 ATS, G572 G316 AT
Marangoni Ringtread RDA-E, Ringtread RZYD Ringtread RTA-E, Ringtread RTAone
Michelin X One XDA, XDA2 AT, X One XDA HT, X Line Energy D, X One Line Energy D XT-1 AT, X One XTA, X One Line Energy T
Oliver Vantage Max Drive ULP, Vantage Trailer II
Pre-Q Galgo Pre-Q DP Pre-Q TA
Vipal N/A VL 130 ECO

Mold Cure Tread

Brand
Drive
Trailer
AcuTread N/A Shallow Trailer Tread (STT)
Michelin XDA2 23 AT XT-1, X One XTA

 

Please direct all inquiries about verified tire technologies to Tech_center@epa.gov.

top of page

Verified Idling Reduction Technologies

EPA has evaluated idle reduction technologies/devices as part of grants, cooperative agreements, emissions testing, engineering analyses, modeling, demonstration projects and external peer reviewed reports to study the effects of idling on air quality, fuel consumption and driver health.  Based on this evaluation and research, EPA has determined that a variety of idle reduction technologies save fuel and reduce emissions when compared to idling the main engine. 

Idle reduction technology allows engine operators to refrain from long-duration idling of the main propulsion engine by using an alternative technology. An idle reduction technology is generally defined as the installation of a technology or device that:

  • is installed on a vehicle (e.g., bus, truck, locomotive, automobile, marine vessel, equipment, etc.) or at a location, and
  • reduces unnecessary main engine idling of the vehicle or equipment, and/or
  • is designed to provide services (e.g., heat, air conditioning, and/or electricity) to the vehicle or equipment that would otherwise require the operation of the main drive engine while the vehicle or equipment is temporarily parked or remains stationary.

Certain idle reduction devices are now exempt from the federal excise tax when purchased with a new truck. For a list of idling reduction technologies eligible for the federal excise tax exemption, please see the Federal Excise Tax Exemption tab on this page.

To date, EPA has verified devices in the following categories of idle reduction technologies:

Electrified Parking Spaces (EPS) / Truck Stop Electrification (TSE)

An EPS system (also known as Truck Stop Electrification) operates independently of the truck’s engine and allows the truck engine to be turned off as the EPS system supplies heating, cooling, and electrical power. The EPS system provides off-board electrical power to operate either:

  • an independent heating, cooling, and electrical power system, or
  • a truck-integrated heating and cooling system.

In both cases, the EPS system reduces main engine idling by providing an alternative source of energy which results in lower emissions than the main engine.

SmartWay has verified technologies among the product lines of the following companies:

  • CabAire
  • Craufurd Manufacturing
  • EnviroDock
  • IdleAire Technologies Corporation
  • Philips and Temro Industries
  • Shorepower™ Technologies
  • Xantrex Technology & Cab Comfort
Shore Connection Systems and Alternative Maritime Power (SCS/AMP)

An SCS/AMP system allows maritime vessels to “plug into” an electrical power source instead of using its diesel auxiliary engines while at port. This system also includes various components such as cables, cable management systems, shore power coupler systems, distribution control systems, and power distribution.

SmartWay has verified technologies among the product lines of the following company:

  • SAM Electronics

Note on shore connection baseline and offsetting emissions: A method to determine baseline emissions of your project is available in the following publication: Rulemaking to Consider Adoption of Proposed Regulations to Reduce Emissions from Diesel Auxiliary Engines on Ocean-Going Vessels while at Berth at a California Port (Appendix B: Emission Inventory Methodology); California Air Resources Board (December 6, 2007) which is available at http://www.arb.ca.gov/ports/shorepower/shorepower.htm. While this report provides information specific to California ports, the method used in this report can be used in other jurisdictions. To determine the offsetting emissions of electrical power use from shore-side power, EPA provides the following model to assess these emissions offsets: The Emissions & Generation Resource Integrated Database (eGRID). This is a comprehensive inventory of electric power systems which uses available plant-specific data for all U.S. electricity generating plants that provide power to the electric grid and report data to the U.S. government. The eGRID contains air emissions data for nitrogen oxides, sulfur dioxide, carbon dioxide, and mercury. Download eGrid and directions at www.epa.gov/cleanenergy/energy-resources/egrid/index.html

Shore Connection Systems for Locomotives (SCS)

An SCS system allows locomotives to “plug into” an electrical power source instead of using its diesel engines while at the rail yard.

SmartWay has verified technologies from the product lines of the following company:

  • Kim Hotstart Manufacturing Company (Electric Driven Heating Systems)
  • Power Drives, Inc.- model DWS-120 (fuel operated heater)
Auxiliary Power Units and Generator Sets (APU/GS)

An APU/GS device contains an EPA emission-certified engine (certified under 40 CFR Part 89). APU/GS devices supply cooling, heating, and electrical power to Class 8 trucks and other applications. EPA has determined through its own test program that these devices reduce emissions on long-haul, Class 8 trucks and locomotives when compared to a truck’s baseline emissions from the main propulsion engine.

The following APU/GS systems are SmartWay verified for long-haul, Class 8 trucks:

  • ACEMCO Power Systems, LLC / Model: ACEMCO Power Unit Series 1
  • Airworks Compressors Corp / Model: Fusion APU
  • Big Rig Products / Model: Nite Hawk
  • Carrier Transicold - ComfortPro
  • Centramatic - Centramatic
  • Diamond Power Systems, LLC - Diamond Power System
  • Dunamis Power Systems - Promax
  • Hodyon LP - Dynasys APU
  • Kohler- 3APU, 7 APU
  • Life Force - Life Force
  • Mantis Metalworks, LLC - Model 175
  • McMillan Electric Company / Model: IdleTime 4500-300
  • McMillan Electric Company / Model: IdleTime 4500-400
  • Midwest Power Generators - MPG702
  • Navistar - Fleetrite APU, MaxxPower APU w/ HVAC
  • Navistar Fleetrite by Mobile Thermo Systems Inc./ Models: INTAPU146 and INTAPUT46
  • Parks Industries, LLC: Model Hp 2000
  • Pony Pack, Inc. - Pony Pack
  • Power Technology Southeast - PowerPac
  • RigMaster Power by Mobile Thermo Systems Inc. / Model: MTS T4-6
  • Star Class - GEN-STAR 4500, GEN-STAR 6000
  • Thermo King Corp. - TriPac
  • TRIDAKO Energy Systems - Power Cube
  • Volvo - 971-003/4 (optional 82A-B1X)
  • Willis Power Systems - Willis APU

SmartWay has verified APU/GS systems for locomotives among the product lines of the following companies:

  • Kim Hotstart Manufacturing Company
  • Power Drives, Inc. - model DWS-APU
  • Proheat Ecotrans L.P.
Fuel Operated Heaters (FOH) aka Direct Fired Heaters (DFH)

A FOH provides heat (only) by combusting fuel drawn from the main engine or other fuel system. EPA has determined through its own test program that these devices reduce emissions on long-haul, Class 8 trucks when compared to the trucks baseline emissions. EPA has also determined that FOHs provide a similar idle reduction benefit when used on school buses and locomotives. In addition, the California Air Resources Board has approved certain FOHs for compliance with applicable California emissions standards.

The following FOHs are SmartWay verified for long-haul, Class 8 trucks:

  • Automotive Climate Control - FFHD 2
  • Espar Heater Systems - D1LC, D3LC, Airtronic D2/D4, Hydronic 5/8/10/12
  • Proheat - A2, A4, X45
  • Volvo - 41-11
  • Webasto - Air Top 2000, Air Top 3500, Thermo 90S
  • Webasto - Air Top 2000 ST (new version of Air Top 2000)
  • Webasto - Air Top Evo 3900 (new version of Air Top 3500)
  • Webasto - Thermo 90 ST (new version of Thermo 90S)
  • Webasto - Air Top Evo 5500 (new version of Air Top 5000)
  • Webasto - TSL 17 (Thermo Top C/Z)
  • Webasto - DBW 2010

The following FOHs are SmartWay verified for school buses:

  • Espar Heater Systems - E-Guardian 5 (Hydronic D5)
  • Espar Heater Systems - E-Guardian 8 (Hydronic D8)
  • Espar Heater Systems - E-Guardian 10 (Hydronic D10)
  • Espar Heater Systems - E-Guardian 12 (Hydronic D12), and Airtronic D2, Airtronic D4, Airtronic D5
  • Proheat Proheat - X45
  • Webasto - TSL 17 (Thermo Top C/Z)
  • Webasto - Scholastic Heater (DBW 2010)

The following FOH systems are SmartWay  verified for locomotives:

  • A.S.T. Group -  35kW, 50kW and 90kW LTP Systems (includes automatic Start/Stop capability)
Battery Air Conditioning Systems (BAC)

A BAC system uses batteries to power an independent electric cooling system. Typically, these systems integrate a FOH to supply heating. EPA has evaluated BACs and finds that these systems reduce emissions on long-haul, Class 8 trucks when compared to the truck’s baseline emissions.

The following BAC systems are SmartWay verified:

  • All Around Contracting LLC / Kool Rig System
  • AuraGen - Inverter/Charger System
  • Bergstrom, Inc - NITE
  • Cool Moves / Models: Bycool Mochila and Bycool Revolution
  • Cool Moves / Models: Minicool Compact and Minicool Dinamic
  • Cool Moves - Rencool / Models: RDK4 and RTK5
  • Crosspoint Solutions LLC - ClimaCab
  • DC Power Solutions - APU/AC System
  • Diamond Power Systems LLC/ Models: DPS 10K-DC and DPS 15KB
  • Dometic Corp. - Sleeper AC
  • Driver Comfort System - Driver Comfort System
  • Energy Xtreme Independence Package Long-Haul Comfort System - battery APU/AC system
  • Freightliner Cascadia - Park Smart System
  • Hammond Air Conditioning, LTD - Artic Breeze
  • Idle Free Systems - Reefer Link System I
  • Indel B Sleeping Wel - Arctic 1000, Arctic 2000, Oblo
  • NAS, LLC / Comfort Cab - Model: 100 M (Battery HVAC)
  • Navistar - MaxxPower Battery HVAC System (with Espar E-Guardian Heater and insulated sleeper curtain)
  • Paddock Solar - Paddock Solar
  • Peterbilt - Comfort Class System
  • Safer Corporation - VIESA
  • Sobo Inc./ Kingtec Technologies (Heyuan) Co. Ltd. - Model: Sleeper AC 12K10F3-1
  • Sun Power Technologies - Sleeper AC
  • Thermo King TriPak - e
  • Volvo - 971-001/2
Thermal Storage Systems (TSS)

A TSS collects heat energy as a truck is driven, and uses it to provide air conditioning while the engine is off. These systems reduce emissions from Class 8 trucks.

The following TSSs are SmartWay verified:

  • Autotherm Division Enthal Systems, Inc. - T-2500 Energy Recovery System
  • Webasto - BlueCool Truck
Automatic Shut-down/ Start-up Systems

An automatic engine shut-down/start-up system not only turns off the main engine while idling but can re-start the engine when necessary. Re-start of the main engine is typically based on a set time period, engine or ambient temperature, and other parameters (e.g., battery charge). To date, SmartWay has only verified AESS systems for locomotives.

SmartWay has verified AESS systems for locomotives among the product lines of the following manufacturers:

Locomotives:

  • GE Transportation
  • Motive Power model - Q Tron QEG-1000
  • Motive Power model - Q Tron Engine Run Manager System (for use in conjunction with an auxiliary power unit)
  • Motive Power model - Q Tron QES-III (micro processor locomotive control with integrated AESS functionality)
  • ZTR Control Systems/Hotstart - Integrated AESS+APU model DDHSJR-111
  • ZTR Control Systems - model SmartStart IIe
*** Technologies No Longer Verified***

Notice: On March 1, 2013 the verification status of the following device changed:

BAC

  1. Due to a change in ownership the Glacier BayClimaCab (BAC) is now sold by Crosspoint Solutions LLC and renamed Crosspoint Solutions LLC ClimaCab.

Notice: On March 21, 2012 the verification status of the following devices changed:

APU

  1. Due to a change in ownership the Comfort Master (APU) has been renamed "ACEMCO Power Unit 1" and is now sold by ACEMCO Power Systems, LLC.

Notice: On August 18, 2011 the verification status of the following device(s) changed:
EPS (TSE)

1. Proheat, Inc.; no longer manufactured
2. Navistar/Bergstrom - 12V Aux No-Idle HVAC; no longer manufactured

Notice: On May 12, 2011 the verification status of the following devices changed:

APUs

  1. Idle Solutions - Idle Solutions; business status unavailable
  2. Kool Gen - KG-1000; business status unavailable
  3. Stark Mfg., LLC/ Parks Industries , LLC - HP2000; duplicate listing
  4. Truck Gen - UCT 2-5.5, UCT-APU; no longer manufactured nor providing service

Notice: On April 05, 2011, the verification status of the following devices changed:

APUs

  1. Aux Generators Inc. - Idle Hawk; business status unavailable
  2. Cummins - Comfort Guard; no longer manufactured
  3. Cummins Onan - Quiet Diesel; no longer manufactured
  4. Double Eagle Industries - Gen-Pac; business status unavailable
  5. Flying J Inc - Cab Comfort System; no longer manufactured
  6. Frigette Truck Climate Systems - APU, Gen Set 1, Gen Set 2; out of business and no longer manufactured
  7. Idlebuster - Idlebuster; suspended all operations
  8. Gates Corporation - Cab Runner; no longer manufacturing nor providing service.

Notice: On June 17, 2010, the verification status of the following devices changed:

APUs

  1. Auxiliary Power Dynamics, LLC; is now Willis Power systems - the Willis APU is listed
  2. Black Rock System - Black Rock; is out of business and is no longer listed
  3. Mechron Power Systems - CCS Lighting Cab Comfort; Mechron discontinued the CCS Lighting Cab Comfort subsequently it is no longer listed.

Notice: On November 23, 2010, the verification status of the following device changed:

BACs

  1. EnergyXtreme - PPEX60, PPEX80; discontinued,no longer available for class 8,heavy duty, long haul trucks

"You will need Adobe Reader to view some of the files on this page. See EPA's PDF page to learn more."

Idling-Reduction Strategies/Best Practices

It is common for drivers to run their engines to stay warm or cool in their trucks while resting after long hauls. And, of course, driver comfort is essential to the job.

Yet long-duration idling is costly to the driver, to the fleet owner, and to the environment. Some surveys show that trucks idle from six to eight hours a day for as many as 250 to 300 days each year. At current fuel prices, this can result in truck owners paying $6000 or more per year in fuel costs per truck.

Each year, long-duration idling of truck and locomotive engines consumes over one billion gallons of diesel fuel and emits 11 million tons of carbon dioxide, 200,000 tons of oxides of nitrogen, and 5,000 tons of particulate matter. Also, idling can increase engine maintenance costs, shorten engine life, harm driver well-being, and elevate noise levels

However, there are many alternatives to long-duration engine idling: they range in cost from a minimal investment to several thousand dollars. The alternatives can be divided into two broad categories: (Click on the blue text links below to learn more.)

    Idling Reduction through Behavior Change

    Here are some examples of ways to affect driver behavior:

    • State and Local Policy: Approximately 22 states and dozens of counties have promulgated laws that restrict the amount of time that a vehicle can idle its main engine. For a current list of state and local laws, see the American Transportation Research Institute's (ATRI's) list of state and local laws.Exit EPA Disclaimer
    • Driver/Operator Training: Educating drivers and operators about the impacts and adverse effects of long-duration idling can help change their behavior.
    • Financial Incentives: Fleet owners can offer financial incentives to drivers to reduce idling. Many large trucking companies already offer these incentives and have reported success in reducing idling times below national averages.

    Instituting a company "no-idling" policy, and investing in education and incentives isn't enough, however, to deter a driver or operator from idling in extreme weather conditions. That's where technology solutions come into play.

    Idling Reduction through Technology

    There are five categories of technology-based idling reduction alternatives.

    • Automatic engine shut down/start up (locomotive)
      An automatic engine shut down/start up system controls the engine by stopping or starting it without operator action, based on a set time period or ambient temperature, and other parameters (e.g., battery charge).
    • Fuel Operated Heaters -aka Direct-Fired Heaters (truck only)
      These are small, lightweight heaters that burn fuel from the main engine fuel supply or a separate fuel reserve. They provide heat only and can be used in conjunction with cooling systems depending upon the cab comfort needs.
    • Diesel-Driven Heating System (locomotive only)
      Designed to heat the coolant and oil to allow main engine shutdown in cold temperatures, the system does not use a generator to produce auxiliary power. Instead, it circulates and heats the engine coolant and oil to a target temperature of 120 F.
    • Auxiliary Power Units/Generator Sets (truck and locomotive)
      These are small, diesel-powered engines (5 to 10 horsepower) that are installed on the truck to provide air conditioning, heat, and electrical power to run accessories like lights, on-board equipment, and appliances.
    • Electrification

      Electrification refers to a technology that uses electricity-powered components to provide the operator with climate control and auxiliary power without having to idle the main engine. This can be on-board equipment (e.g., power inverters, plugs), off-board equipment (e.g., electrified parking spaces or systems that directly provide heating, cooling or other needs) or a combination of the two.

      On October 27, 2003, EPA and the US Department of Transportation held the first national workshop on developing consistent truck stop electrification codes and electrical standards. Following this workshop, EPA published a Notice of Data Availability (NODA) in the Federal Register requesting comments and suggestions which would be used to better develop a national consensus. Truck Stop Electrification Codes and Electrical Standards; Notice of Data Availability (PDF) (13 pp, 157 KB, EPA420-R-05-002, January 2005) About PDFs) and related materials are available in the Federal Docket Management System.(NOTE: To access the docket from this link, select Advanced Search, then Docket Search, and then enter EPA-HQ-OAR-2003-0226 as the Docket ID.)

When companies adopt alternatives to long-duration idling, they can save money on fuel expenses, reduce engine maintenance costs, and reduce health effects from emissions and engine noise.

In addition to these company-level behavioral and technology alternatives, state and local governments are doing their part to help develop national strategies to promote alternatives to long-duration idling:

    State and Local Idling Law Guidance

    For the states, reducing idling translates into substantial reductions of air pollutants. For the trucking industry, reducing idling results in considerable fuel savings. According to EPA studies, long duration truck idling annually consumes more than one billion gallons of diesel fuel at considerable costs to the trucking industry. As a result, truck idling annually emits more than 11 million tons of carbon dioxide and more than 180,000 tons of nitrogen oxides, as well as fine particulate matter and other harmful air toxics.

    Approximately 22 states and dozens of local counties have laws that limit the amount of time that a vehicle can idle its main engine.. To learn more, see the American Transportation Research Institute's (ATRI's) current list of state and local laws. Exit EPA disclaimer

    At the 2004 National Idle-Reduction Planning Conference hosted by the federal government, the trucking industry expressed concern about the inconsistent coverage and impractical design among existing state and local idling restriction laws. According to the trucking industry, truck drivers and owners lack knowledge and understanding of these laws, which decreases their ability to comply. In response to these concerns, EPA hosted a series of five public workshops.

    The goal of the workshops was twofold: (1) to develop a model for a state idling law that would foster greater compliance through common understanding of requirements and ease of implementation; and (2) to raise awareness among the trucking industry, states, and environmental groups about each other's needs. For example, states and environmental groups want to reduce diesel emissions, and truck drivers need to rest comfortably and avoid fatigue-related vehicle accidents.

    Below is a summary of each of the workshops.

    The product of these public workshops was a model state idling law (PDF) (15 pp, 312K, EPA420-S-06-001, April 2006) for states to consider adopting. EPA is not issuing any regulations about vehicle idling; the Agency's role is limited to that of a facilitator to help create more consistent idling laws across the country in hopes of achieving greater fuel savings, emission reductions, and increased compliance with such laws.

    Air Quality Guidance for Idling Reduction

    Reducing long-duration idling will reduce emissions of nitrogen oxides, carbon monoxide, 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 and transportation and general conformity. EPA published a guidance document about quantifying and using locomotive idle emission reductions.

    Currently Available Sources of Idling Technology Solutions

    EPA's list of verified technologies contains detailed information about currently available idle reduction technologies.

    Note, the inclusion of company names and descriptions of their products is not an endorsement of the product, nor a certification or verification of the technology, and is intended for informational purposes only.

    If you would like to list your company's product on this web site list please contact us.

top of page

Verified Retrofit Technologies

For a list of retrofit technologies verified by EPA and the California Air Resources Board, such as diesel oxidation catalysts and diesel particulate filters, please visit EPA's verified retrofit technologies list.

Designated Tractors and Trailers

Coming Soon!  Web updates for the NEW SmartWay-designated Trailer and SmartWay-verified aerodynamic technology programs.  EPA is expanding these programs to include refrigeration trailers, more testing options, improved protocols,
and new “Elite” level. Please check back soon for details!

Your company can become recognized as a leader in your community, in your industry, and on the road when you purchase U.S. EPA-designated SmartWay tractors and trailers for your fleet. These tractors and trailers are outfitted at point of sale with equipment that significantly reduces fuel use and emissions. And, as a SmartWay partner, when you add additional fuel saving components to your equipment, you may qualify to label the exterior of your tractor or trailer as a SmartWay Tractor or SmartWay Trailer marks of cleaner, more fuel-efficient transportation.

Only the most progressive and committed carriers earn the privilege of labeling their vehicles with the SmartWay brand setting them ahead of the pack and delivering a competitive advantage.

And SmartWay financing tools are available to make the SmartWay Tractor and Trailer accessible to even the smallest carriers.

"You will need Adobe Reader to view some of the files on this page. See EPA's PDF page to learn more."

How to Get an EPA-designated SmartWay Tractor

Fleet owners who purchase or lease SmartWay Tractors know they are using the cleanest, most fuel-efficient equipment available. SmartWay Transport Partners that purchase or lease SmartWay Tractors, and are in good standing are eligible to label the exterior of their SmartWay Tractors with the SmartWay mark.

Frequently Asked Questions about EPA-designated SmartWay Tractors

Click on the questions below to see detailed answers.

Who manufactures EPA-designated SmartWay Tractors?

Carriers know they are getting a qualified tractor by the special mark affixed in the cab. Equipment manufacturers have developed unique specification sheets detailing equipment requirements and options for placing an order for an EPA-designated SmartWay Tractor.

Specific EPA-designated SmartWay Tractor models can be ordered through the following manufacturers:

Manufacturer Tractor Model Model Year
Navistar Prostar 2007, or newer
Navistar 9200i 2007, 2008 & 2009
Navistar LoneStar 2008, or newer
Mack Pinnacle 2008, or newer
Daimler Columbia 2008, or newer
Daimler Century Class S/T 2008, or newer
Daimler Cascadia 2008, or newer
Volvo VN 630 2007, or newer
Volvo VN 670 2007, or newer
Volvo VN 780 2007, or newer
Kenworth T2000 2008, 2009, 2010 & 2011
Kenworth T660 2008, or newer
Kenworth T680 2012, or newer
Kenworth T700 2011, or newer
Peterbilt 387 2008, 2009, 2010 & 2011
Peterbilt 386 2008, or newer
Peterbilt 384 2010, or newer
Peterbilt 587 2011, or newer
Peterbilt 579 2012, or newer

Who can use the SmartWay Tractor mark?

Only SmartWay Transport Partners in good standing that purchase or lease EPA-designated SmartWay Tractors and signs the SmartWay mark guidelines can apply the mark to the exterior of their EPA-designated SmartWay equipment.

trailer logo

A partner that purchases or leases an EPA-designated SmartWay Tractor and signs the SmartWay mark guidelines may affix the SmartWay Tractor mark on the exterior of the cab.

This mark signifies that the tractor meets EPA environmental and fuel-efficiency standards for excellence. This is an exclusive designation that sets the SmartWay Partner apart from its peers in the industry. For carriers and truckers, the SmartWay mark is a signal to consumers and the community that they are taking actions to limit the negative environmental impacts of their business operations.

Any company may purchase or lease EPA-designated SmartWay Tractors. However, only SmartWay Transport Partners are eligible to place the SmartWay Tractor mark on the exterior of their equipment. Learn more about becoming a SmartWay Partner.

Contact SmartWay at 734-214-4767 or your SmartWay partner account manager for more information about mark use.

How can I get the SmartWay Tractor decal or digital logo files for labeling the exterior of my SmartWay Tractor?
Review the following technical specifications criteria to determine eligibility of your company's tractors. If eligible, complete and submit the Equipment Checklist, along with the Mark Signature Form (page 33) of the SmartWay Graphic Standards & Usage Guide. Signature and submission by a company official on each page means that your company owns/operates a tractor that meets the SmartWay specifications/requirements, and understands and agrees to adhere to SmartWay brand guidelines. Following EPA review, the digital logo files will be sent to eligible SmartWay partner companies.

What are the technical specifications and requirements for the EPA-designated SmartWay Tractor?
  SmartWay Tractor Equipment List Maintenance or Operational Requirement
Engine Specifications A 2007 or later model year engine designated to meet U.S. EPA NOx/PM emission requirements
  • Maintain per manufacturers service recommendations.
     
Aerodynamic Features

A SmartWay-designated base aerodynamic tractor model is equipped with:

  • Integrated sleeper cab roof fairing
  • Aerodynamic mirrors
  • Aerodynamic bumper
  • Cab side extenders
  • Fuel tank fairings
  • Maintain per manufacturers service recommendations. Replace if necessary.
     
Tractor Tire Specifications

Low-rolling resistance steer and drive tires (duals or singles aluminum wheels optional) that provide a 3 percent vehicle fuel economy benefit, relative to mid-range rolling resistance tires as defined by EPA. Approximately half the fuel savings, or about
1 percent, is contributed by the tractor steer and drive tires. See current qualifying trailer tire models on the verified tire technologies tabt:

Additional tire models may be added in the future.
  • Commitment to replace the tires with currently qualifying low rolling resistance tractor tire models or retreads
  • Maintain tires at manufacturer-recommended load and inflation pressures
  • Tires that qualify for verification in the steer position also qualify for drive tire verification.

     

   
Tractor Wheels

EPA encourages (but does not require) the use of lighter-weight aluminum wheels rather than steel wheels, on the SmartWay tractor.

    • Alcoa aluminum wheels
    • Accuride aluminum wheels

Maintain per manufacturers service recommendations. Replace if necessary.

     
Idling Control

SmartWay truck carriers must employ at least one no-idle option capable of providing at least eight hours of idle-free auxiliary power, heat, and/or air conditioning. To ensure that the truck does not idle overnight on a year-round basis, a combination of idle reduction options may be needed. Each system must have at least eight hours of operating capacity.

  • An auxiliary power unit or generator set
  • Fuel operated heater
  • Battery operated heating and/or cooling system
  • Thermal Storage System

See current qualifying idle reduction equipment on the verified idling technologies tab.:

Carriers (or SmartWay Partners) can either:

  • Select tractor models equipped with idle reduction control technologies available from the truck manufacturer;
  • Purchase and install a qualified after-market on-board idle reduction technology; or
  • Opt to employ a documented, on-going and consistent (year-round) no-idling policy of:
    • Using double drivers or providing overnight hotel stays for drivers
    • Using truck stop electrification.*

*Truck stop electrification allows trucks to use electrical power from an external source. At properly equipped truck stops, drivers can shut the main truck engine off and plug into an electrical outlet that provides power for heaters, air conditioners, marker lights, and other accessories. Trucks need to be equipped with the required internal wiring, inverter system, and HVAC system to take advantage of truck stop electrification. Advanced truck stop electrification also provides electricity from an external source, but doesn't require the truck to be equipped with special systems. Truck parking bays are installed with equipment that provides the cab with electrical power, and heating, cooling, and other amenities like telecommunication hook ups, through an external console that fits into the truck's window frame. The truck-side console has temperature controls, an air supply and return pipe, a credit card reader, keypad, and a 100 VAC outlet.

Please note: EPA may 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.

top of page

Frequently Asked Questions about EPA-designated SmartWay Trailers

Click on the questions below to see detailed answers.

Who manufactures EPA-designated SmartWay Trailers?

Carriers know they are getting a qualified trailer by the special logo affixed in the trailer. Equipment manufacturers have developed unique specification sheets detailing equipment requirements and options for placing an order for an EPA-designated SmartWay Trailer.

EPA-designated SmartWay Trailers can be ordered directly from the following manufacturers and their dealers:

Trailer Dealer
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.

Many trailer dealers will sell upgraded trailers that meet EPA-designated SmartWay criteria. Contact your local trailer dealer to see if it offers new and retrofit equipment that meets SmartWay specifications.

Who can use the SmartWay Trailer mark?

Only SmartWay Transport Partners in good standing who purchase or lease EPA-designated SmartWay Trailers, and sign the SmartWay mark guidelines can apply the mark to the exterior of their EPA-designated SmartWay equipment.

trailer logo
A partner that purchases or leases an EPA-designated SmartWay Trailer and signs the SmartWay mark guidelines may affix the SmartWay Trailer mark on the exterior of the trailer.


This mark signifies that the trailer meets EPA's environmental and fuel-efficiency standards for excellence. This is an exclusive designation that sets the SmartWay Partner apart from its peers in the industry. For carriers and truckers, the SmartWay mark is a signal to consumers and the community that they are taking actions to limit the negative environmental impacts of their business operations.

Any company can purchase or lease EPA-designated SmartWay Trailers or upgrade older trailers with SmartWay verified equipment. However, only SmartWay Transport Partners are eligible to place the SmartWay Trailer mark on the exterior of their equipment. Learn more about becoming a SmartWay Partner.

Contact SmartWay at 734-214-4767 or your SmartWay partner account manager for more information about mark use.

How can I get the SmartWay Trailer decal or digital logo files for labeling the exterior of my EPA-designated SmartWay Trailer?
Review the following technical specifications criteria to determine eligibility of your company's trailers. If eligible, complete and submit the Equipment Checklist, along with the Mark Signature Form (page 33) of the SmartWay Graphic Standards & Usage Guide. Signature and submission by a company official on each page means that your company owns/operates a trailer that meets the SmartWay specifications/requirements, and understands and agrees to adhere to SmartWay brand guidelines. Following EPA review, the digital logo files will be sent to the eligible SmartWay partner companies.

What are the technical specifications and requirements for the SmartWay Trailer?

A SmartWay Trailer is a dry van trailer that achieves 6.5 percent or greater reduction in fuel consumption, relative to a baseline trailer. SmartWay Trailer fuel savings assume trailer is used with a fully-aerodynamic profile, high-roof tractor with integrated roof fairing and side fairings.

All trailer equipment must be maintained per manufacturers service recommendations or replaced if necessary.

SmartWay certification requirements have not been established for refrigerated trailer units.

SmartWay Trailer Equipment List

 
Base Trailer
  • Design: A EPA-designated SmartWay Trailer is a new dry freight box van trailer for OTR use of 53 feet or greater length. Additional trailer types may be added in the future.
  • An older (or pre-owned)dry van trailer of 53 feet or greater length may also qualify if properly retrofitted.
  • Dimensions:13 5 to 13 7 H, 53 L or greater, 102 outside W
  • Weight: Assumes a standard dry van trailer of approximately 13,000 pounds or less, including weight of tires and wheels, but excluding weight of aerodynamic components
   
Trailer Tire Specifications

Low-rolling resistance trailer tires (duals or singles, aluminum wheels optional) that provide a 3 percent vehicle fuel economy benefit, relative to mid-range rolling resistance tires as defined by EPA. Approximately half the fuel savings, or about 1 percent, is contributed by the trailer tires. See current qualifying trailer tire models from the verified tire technologies tab.

Additional tire models may be added in the future.

Partners must commit to replace the tires with current qualifying low rolling resistance trailer tire models or retreads. Tires are to be maintained at manufacturer-recommended load and inflation pressures.

   
Trailer Wheels

EPA encourages (but does not require) the use of lighter-weight aluminum wheels rather than steel wheels, on the SmartWay trailer.

  • Alcoa aluminum wheels
  • Accuride aluminum wheels
 
Trailer Aerodynamics

See current qualifying aerodynamic equipment from manufacturers of the verified aerodynamic technologies tab:

Additional aerodynamic technologies, manufacturers, and models may be added in the future.

SmartWay Trailers must be equipped with a selection of aerodynamic technologies in the following configurations.

   
Configuration A Configuration A
  • Low-rolling resistance tires: models from manufacturers listed on the "Tires" tab.
  • Trailer Side Skirt: manufacturers listed on the "Aerodynamics" tab.
  • Trailer Gap Reducer (fairing): manufacturers listed on the "Aerodynamics" tab.
   
Configuration B Configuration B
  • Low-rolling resistance tires: models from manufacturers listedon the "Tires" tab.
  • Trailer Side Skirt: manufacturerslisted on the "Aerodynamics" tab.
  • Trailer Boat Tail: manufacturers listed on the "Aerodynamics" tab.
   

Optional Trailer Aero Configuration

Aero Configuration
  • Low-rolling resistance tires: models from manufacturers listed on the "Tires" tab.
  • Optional Total Aero Configuration
        • Trailer Side Skirt: manufacturers listed on the "Aerodynamics" tab.
        • Trailer Gap Reducer (fairing):manufacturerslisted on the "Aerodynamics" tab.
        • Trailer Boat Tail:manufacturers listed on the "Aerodynamics" tab.
   
Configuration C Configuration C
  • Low-rolling resistance tires: models from manufacturers listed on the "Tires" tab.
  • Advanced Trailer End Fairing: manufacturer listed on the "Aerodynamics" tab.
   
Configuration D Configuration with Side Skirt
  • Low-rolling resistance tires: models from manufacturers listed here.
  • Advanced Trailer Side Skirt: manufacturers listed on the "Aerodynamics" tab (this equipment may be used with or without other fairings).
  •    

    Please note: EPA may 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.

    top of page

    Federal Excise Tax Exemption

    In the Energy Improvement and Extension Act (EIEA) of 2008 (PL 110-343), Section 206 excludes certain idling reduction devices and advanced insulation from the federal excise tax.  This law amends section 4053 of the Internal Revenue Code.

    For purposes of section 4053(9)(B) of the Internal Revenue Code, the Administrator of EPA, in consultation with the Secretary of Energy and the Secretary of Transportation, has determined that the devices (listed below under the FAQs) reduce the idling of a tractor at a motor vehicle rest stop or other location where such vehicles are temporarily parked or remain stationary. For the purposes of EIEA, the effective date of this list is the first day after the enactment of EIEA (October 4, 2008). Companies interested in adding their technology to this list should contact EPA after reviewing the criteria for product eligibility below.

    Motor carriers must ensure that all devices installed on Commercial Motor Vehicles conform to the Federal Motor Carrier Safety Regulations, 49 CFR 393, Parts and Accessories Necessary for Safe Operation.  Those regulations of particular concern to users of auxiliary power units are contained in section 393.28, section 393.30, and SubPart E of Part 393.  These requirements dictate the specifications of installation of wiring and fuel systems for this equipment.

    For more information about the tax exempt status of these idling reduction devices, please refer to the instructions for Form 720, Quarterly Federal Excise Tax Return, found at www.irs.gov. You may also contact Internal Revenue Service (IRS), Department of Treasury at (202) 622-3130.

    Federal Excise Tax Exemption FAQs

    Click on the questions below to see detailed answers.

    "You will need Adobe Reader to view some of the files on this page. See EPA's PDF page to learn more."

    When did some idling reduction devices become exempt from the federal excise tax?

    On October 3, 2008, the President signed into law the Emergency Economic Stabilization Act of 2008 (Public Law 110-343). This law also enacted the Energy Improvement and Extension Act (EIEA) of 2008. Specifically, section 206 of the EIEA excludes some idling reduction devices and advanced insulation from the federal excise tax.

    Does the excise tax exemption apply to idling reduction devices installed on all vehicles?

    No. The exemption is only available for idling reduction devices installed on tractors. A tractor is a highway vehicle designed to tow a vehicle, such as a trailer or semi-trailer (aka an 18-wheeler). A tractor may carry incidental items of cargo when towing or limited amounts of cargo when not towing. (Reference: IRS Publication 510)

    Does the consumer directly benefit from the federal excise tax exemption for idling reduction devices?

    The truck excise tax, which is nominally 12% of the sales price, is triggered by an event such as the first sale or use of a taxable vehicle. The tax is destined for the Federal Highway Trust Fund and can be paid by the truck retailer or purchaser, but is generally collected and remitted by the seller. Since the tax is generally paid by the purchaser or lessor in conjunction with the sale or lease, the exemption for idling reduction devices serves to incentivize purchasers to order such devices in conjunction with the purchase or lease of a new taxable truck or tractor.

    Where can I find information about federal excise taxes and how they work?

    IRS Publication 510 offers a comprehensive explanation of federal excise taxes. Chapter 6 of Publication 510 offers information about the retail tax on heavy trucks, trailers, and tractors. Publication 510 is available on the IRS website. For more information regarding the tax exempt status of idling reduction devices, please read the instructions for Form 720, Quarterly Federal Excise Tax Return.

    Who can I contact with tax questions about the excise tax exemption for idling reduction devices?

    Contact the IRS Department of Treasury with any tax questions about idling reduction devices. They can be reached at (202) 622-3130.

    Where can I find information about idling reduction?

    Each year in the United States, the trucking industry consumes over one billion gallons of diesel fuel and emits over 11 million tons of CO2 and 200,000 tons of NOx while trucks are at idle. For more information about the benefits of idling reduction, please visit the idling technologies tab.

    What is EPA's role in this federal excise tax exemption?

    EPA, in consultation with the Departments of Energy and Transportation, identifies all eligible devices that reduce tractor idling. EPA publishes the list of approved idling reduction devices that are exempt from the federal excise tax.

    Where can I find the list of EPA approved idling reduction devices?

    The complete list of EPA approved idling reduction devices can be found on the Eligible Products list.

    How does EPA approve idling reduction devices?

    EPA evaluates idling reduction technologies by conducting emissions testing and engineering analyses to determine if a device should be approved as a verified technology. EPA also uses information gathered from EPA-funded grant projects, cooperative agreements, demonstration projects and external peer-reviewed reports to inform their decision.

    If I'm a technology vendor, how do I add my product to EPA's approved technology list?

    Vendors should contact Victor McMahan at mcmahan.victor@epa.gov or 202-343-9259 for more information.

    Criteria for Federal Excise Tax Exemption

    An idle reduction technology is defined a technology or device that:

    1. is affixed to a tractor;
    2. is designed to provide services (such as heat, air conditioning, and/or electricity) to the vehicle or equipment that would otherwise require the operation of the main drive engine while the vehicle or equipment is temporarily parked or remains stationary; and
    3. reduces unnecessary idling of the vehicle or equipment.

    EPA and the Department of Energy have evaluated idle reduction technologies and devices as part of grants, cooperative agreements, emissions testing, engineering analyses, modeling, demonstration projects and external peer reviewed reports to study the effects of idling on air quality, fuel consumption and driver health.

    Based on this evaluation and research, EPA has determined that a variety of idle reduction technologies save fuel and reduce emissions when compared to idling the main engine. Qualified devices are added to EPA's list of verified idling control technologies; in the future, additional technologies and devices can be added to this list.

    Motor carriers must ensure that all devices installed on Commercial Motor Vehicles conform to the Federal Motor Carrier Safety Regulations, 49 CFR 393, Parts and Accessories Necessary for Safe Operation. Those regulations of particular concern to users of auxiliary power units are contained in Section 393.28, Section 393.30, and SubPart E of Part 393.  These requirements dictate the specifications of installation of wiring and fuel systems for this equipment.

    Manufacturers should contact Anthony Erb at erb.anthony@epa.gov or 202-343-9259 for more information.

    The devices listed on the exempted technology list (see "Eligible Products for the Federal Excise Tax Exemption" below) save fuel and reduce emissions when compared to idling the main engine.

    Eligible Products for the Federal Excise Tax Exemption

    These idling reduction technologies are organized by the technology type and listed by company/model:

    Fuel Operated Heaters

    • Automotive Climate Control (ACC) / Fuel Fired Heater (air-to-air) FFHD 2
    • Espar / D1LC
    • Espar / D3LC
    • Espar / Airtronic D2
    • Espar / Airtronic D4
    • Espar / Hydronic 5
    • Espar / Hydronic 8-10-12
    • Proheat A2
    • Proheat A4
    • Proheat X45
    • Volvo 41-11
    • Webasto / Air Top 2000 ST (new version of Air Top 2000)
    • Webasto / Air Top Evo 3900 (new version of Air Top 3500)
    • Webasto / Air Top EVO 5500 (new version of Air Top 5000)
    • Webasto / DBW 2010
    • Webasto / DBW 2020/300
    • Webasto / NGW 300
    • Webasto - TSL 17 (Thermo Top C/Z)
    • Webasto / Thermo 50
    • Webasto / Thermo 90 ST (new version of Thermo 90S)
    • Webasto / Thermo 230/300/350

    Top of Page

    Battery Air Conditioning/Heating Systems

    • All Around Contracting LLC / Kool Rig System
    • AuraGen - Inverter/Charger System
    • Bergstrom, Inc - NITE
    • Cool Moves / Models: Bycool Mochila and Bycool Revolution
    • Cool Moves / Models: Minicool Compact and Minicool Dinamic
    • Cool Moves - Rencool / Models: RDK4 and RTK5
    • Crosspoint Solutions LLC - ClimaCab
    • DC Power Solutions - APU/AC System
    • Diamond Power Systems LLC/ Models: DPS 10K-DC and DPS 15KB
    • Dometic Corp. - Sleeper AC
    • Driver Comfort System - Driver Comfort System
    • Energy Xtreme Independence Package Long-Haul Comfort System - battery APU/AC system
    • Freightliner Cascadia - Park Smart System
    • Hammond Air Conditioning, LTD - Artic Breeze
    • Idle Free Systems - Reefer Link System I
    • Indel B Sleeping Wel - Arctic 1000, Arctic 2000, Oblo
    • NAS, LLC / Comfort Cab - Model: 100 M (Battery HVAC)
    • Navistar - MaxxPower Battery HVAC System (with Espar E-Guardian Heater and insulated sleeper curtain)
    • Paddock Solar - Paddock Solar
    • Peterbilt - Comfort Class System
    • Safer Corporation - VIESA
    • Sobo Inc./ Kingtec Technologies (Heyuan) Co. Ltd. - Model: Sleeper AC 12K10F3-1
    • Sun Power Technologies - Sleeper AC
    • Thermo King TriPak - e
    • Volvo - 971-001/2

    Top of Page

    Auxiliary Power Units/Generator Sets

    • ACEMCO Power Systems, LLC / Model: ACEMCO Power Unit Series 1
    • Airworks Compressors Corp / Model: Fusion APU
    • Big Rig Products / Model: Nite Hawk
    • Carrier Transicold - ComfortPro
    • Centramatic - Centramatic
    • Diamond Power Systems, LLC - Diamond Power System
    • Dunamis Power Systems - Promax
    • Hodyon LP - Dynasys APU
    • Kohler- 3APU, 7 APU
    • Life Force - Life Force
    • Mantis Metalworks, LLC - Model 175
    • McMillan Electric Company / Model: IdleTime 4500-300
    • McMillan Electric Company / Model: IdleTime 4500-400
    • Midwest Power Generators - MPG702
    • Navistar - Fleetrite APU, MaxxPower APU w/ HVAC
    • Navistar Fleetrite by Mobile Thermo Systems Inc./ Models: INTAPU146 and INTAPUT46
    • Parks Industries, LLC: Model Hp 2000
    • Pony Pack, Inc. - Pony Pack
    • Power Technology Southeast - PowerPac
    • RigMaster Power by Mobile Thermo Systems Inc. / Model: MTS T4-6
    • Star Class - GEN-STAR 4500, GEN-STAR 6000
    • Thermo King Corp. - TriPac
    • TRIDAKO Energy Systems - Power Cube
    • Volvo - 971-003/4 (optional 82A-B1X)
    • Willis Power Systems - Willis APU

    Top of Page

    Thermal Storage Systems

    • Autotherm Division Enthal Systems, Inc / T-2500 Energy Recovery System (ERS)
    • Webasto / BlueCool Truck

    Shore Connection Systems

    • Comfort / Duo-Therm heat pump
    • Freightliner’s Shorepower System
    • Phillips and Temro Industries / Cab Power 8500633
    • Shurepower, LLC / Shurepower
    • Volvo 5H-A1 / 120 V Shore Power Kit
    • Volvo LN-A1 /Inverter Charger Kit
    • Xantrex Technology / TRUCKPOWER Inverter/Charger & Cab
    ***List of Technologies No Longer Eligible for Federal Excise Tax Exemption***

    Notice: On March 1, 2013 the verification status of the following device changed:

    BAC

    1. Due to a change in ownership the Glacier BayClimaCab (BAC) is now sold by Crosspoint Solutions LLC and renamed Crosspoint Solutions LLC ClimaCab.

    Notice: On March 21, 2012 the verification status of the following devices changed:

    APU

    1. Due to a change in ownership the Comfort Master (APU) has been renamed "ACEMCO Power Unit 1" and is now sold by ACEMCO Power Systems, LLC.

    Notice: On August 18, 2011 the verification status of the following device(s) changed:
    EPS (TSE)

    1. Proheat, Inc.; no longer manufactured
    2. Navistar/Bergstrom - 12V Aux No-Idle HVAC; no longer manufactured

    Notice: On May 12, 2011 the verification status of the following devices changed:

    APUs

    1. Idle Solutions - Idle Solutions; business status unavailable
    2. Kool Gen - KG-1000; business status unavailable
    3. Stark Mfg., LLC/ Parks Industries , LLC - HP2000; duplicate listing
    4. Truck Gen - UCT 2-5.5, UCT-APU; no longer manufactured nor providing service

    Notice: On April 05, 2011, the verification status of the following devices changed:

    APUs

    1. Aux Generators Inc. - Idle Hawk; business status unavailable
    2. Cummins - Comfort Guard; no longer manufactured
    3. Cummins Onan - Quiet Diesel; no longer manufactured
    4. Double Eagle Industries - Gen-Pac; business status unavailable
    5. Flying J Inc - Cab Comfort System; no longer manufactured
    6. Frigette Truck Climate Systems - APU, Gen Set 1, Gen Set 2; out of business and no longer manufactured
    7. Idlebuster - Idlebuster; suspended all operations
    8. Gates Corporation - Cab Runner; no longer manufacturing nor providing service.

    Notice: On June 17, 2010, the verification status of the following devices changed:

    APUs

    1. Auxiliary Power Dynamics, LLC; is now Willis Power systems - the Willis APU is listed
    2. Black Rock System - Black Rock; is out of business and is no longer listed
    3. Mechron Power Systems - CCS Lighting Cab Comfort; Mechron discontinued the CCS Lighting Cab Comfort subsequently it is no longer listed.

    Notice: On November 23, 2010, the verification status of the following device changed:

    BACs

    1. EnergyXtreme - PPEX60, PPEX80; discontinued,no longer available for class 8,heavy duty, long haul trucks

    Top of Page

    This page is maintained by EPA's Office of Transportation and Air Quality (OTAQ).
    For more: About Us | Browse the A to Z Subject Index. For questions, technical assistance or more information: Contact Us

    Jump to main content.