Transport Partnership
     Sum may of SmartWay

        Tractor ft Trailer


    U.S. Environmental Protection
    Agency Certified SmartWay trac-
    tors and trailers are a new genera-
    with cleaner, fuel-saving
    features. SmartWay tractors and
    trailers can achieve fuel savings
    of 10 to 20 percent (saving car-
    riers between 1,700 and 3,300
    gallons of diesel fuel annually),
    lower greenhouse-gas emissions,
    and significantly reduce oxides of
    nitrogen, particulate matter, and
    other air pollutants.

    This is an EPA document describ-
    ing how the Joint TMC/SAE Fuel
    Consumption Test Procedure -
    Type II (SAEJI32I Surface Vehicle
    Recommended Practice (October,
    1986) can be adapted as an interim
    test method to quantify the fuel
    consumption impact of fuel-saving
    equipment for the purpose of deter-
    mining eligibility for inclusion in
                    Interim Test Method for Verifying

            Fuel-Saving Components for SmartWay:

	Modifications to SAE JI32I

   Description of Interim Test Method

  The Joint TMC/SAE Fuel Consumption Test Procedure - Type II (SAE
  J1321 Surface Vehicle Recommended Practice (October, 1986) is modified
  by adding the following provisions:

  1.  Test must be conducted on a test track, not a roadway.
  2.  Test track length > 1.5 miles (5 miles recommended).
  3.  Track must be circular, figure eight, or oval in shape.
  4.  Track surface must be completely dry and well-maintained; surface
      typical of highway surfaces (asphalt or cement).
  5.  Grade change on test track not greater than 2 degrees.
  6.  Altitude of test facility not greater than 4,000 feet above sea level.
  7.  No precipitation on the test track for duration of test.
  8.  Temperatures at the test track must be 68 - 86 F for duration of test.
  9.  Wind speed at the test track cannot exceed 12 mph for duration of test.
  10. Wind gusts at the test track cannot exceed 15 mph for duration of test.
  11. Top speed of test drive cycle not to exceed 65 mph.
  12. Test trailer configuration must be a typical dry box semi-trailer, 53' long,
      102" wide, and 13'6" high.
  13. Trailers must be the same model and similar age, mileage and
  14. Each trailer must have the same test payload. The combined weight of
      the trailer and payload must be approximately 46,000 pounds, +/- 500
  15. Test payload must be loaded over axle to be consistent with federal
      bridge laws. Payload must be secured so it does not shift during the
  16. Tires must be inflated to manufacturer-recommended maximum cold
      inflation pressure prior to start of test.
  17. Tires must be as similar as possible in size and condition, and have
      accumulated at least 500 miles wear-in prior to start of test.
  18. The tractor-trailer gap must as similar as possible on both pairs of
      trucks, as measured from the back of the tractor to the front of the
  19. If testing a candidate tractor against a current SmartWay tractor
      model for the purpose of demonstrating SmartWay eligibility, the two
      tractors must have substantially similar drive train and power train
      configuration, including gearratio, engine horsepower and size,
      transmission type, lubricant type, rear axle ratio, accumulated mileage,
      emissions aftertreatment system, etc.
  20. If testing trailer modifications or trailer aerodynamic equipment,
      test tractors must be equipped with features typical of line haul
      combination trucks- e.g., high roof fairing, side cab extender fairings,
      and aerodynamic profile.
  21. EPA must review and approve the test plan and the vehicle
      configurations prior to testing.
   SmartWay Transport | EPA-420-F-09-046 |  www.epa.gov/smartway |  734-214-4767 |  smartway_transport@epa.gov

22.  EPA reserves the right to review all test data and
    to reject any test it determines was not conducted
    in accordance with these provisions and / or SAE
    J1321, or otherwise not credible according to good
    engineering judgment.

General requirement:

All provisions of SAE J1321 must be followed, in addition
to the above EPA provisions. Trucks must be prepped
and maintained according to SAE J1321, and results
must be within SAE test minimum acceptable ratios
to be a valid test. All measurement devices must be
NIST-traceable. The fuel must meet all applicable ASTM
standards for motor fuel for the intended application.
Contact EPA
Interested organizations should contact SmartWay prior
to testing.

To contact EPA,

   send an e-mail to: SmartWav-tech@epa.gov
   telephone the SmartWay Transport Partnership Call
   Center at (734) 214-4767
   write to SmartWay Transport Partnership, US EPA,
   2000 Traverwood, Ann Arbor, Ml 48105.

If you have questions regarding SmatWay Certified
Tractors and Trailers or SmartWay verified technologies,
contact the SmartWay Technology Team at:
    SmartWay Transport |  EPA^120-F-09-046 | www.epa.gov/smartway | 734-214-4767 | smartway_transport@epa.gov