This subpart specifies how to perform emission testing and emission modeling required elsewhere in this part.
(a) Use the equipment and procedures specified in 40 CFR part 1066 to determine whether vehicles meet the evaporative and refueling emission standards specified in Sec. 1037.103.
(b) Where exhaust emission testing is required, use the equipment and procedures in 40 CFR part 1066 to determine whether your vehicles meet the duty-cycle emission standards in subpart B of this part. Measure the emissions of all the exhaust constituents subject to emission standards as specified in 40 CFR part 1066. Use the applicable duty cycles specified in Sec. 1037.510.
(c) [Reserved]
(d) Use the applicable fuels specified 40 CFR part 1065 to perform valid tests.
(1) For service accumulation, use the test fuel or any commercially available fuel that is representative of the fuel that in-use vehicles will use.
(2) For diesel-fueled vehicles, use the appropriate diesel fuel specified for emission testing. Unless we specify otherwise, the appropriate diesel test fuel is ultra low-sulfur diesel fuel.
(3) For gasoline-fueled vehicles, use the gasoline specified for ``General Testing''.
(e) You may use special or alternate procedures as specified in 40 CFR 1065.10.
(f) This subpart is addressed to you as a manufacturer, but it applies equally to anyone who does testing for you, and to us when we perform testing to determine if your vehicles meet emission standards.
(g) Apply this paragraph (g) whenever we specify use of standard trailers. Unless otherwise specified, a tolerance of 2 inches applies for all nominal trailer dimensions.
(1) The standard trailer for high-roof tractors must meet the following criteria:
(i) It is an unloaded two-axle dry van box trailer 53.0 feet long, 102 inches wide, and 162 inches high (measured from the ground with the trailer level).
(ii) It has a king pin located with its center 360.5 inches from the front of the trailer and a minimized trailer gap (no greater than 45 inches).
(iii) It has a smooth surface with nominally flush rivets and does not include any aerodynamic features such as side fairings, boat tails, or gap reducers. It may have a scuff band of no more than 0.13 inches in thickness.
(iv) It includes dual 22.5 inch wheels, standard mudflaps, and standard landing gear. The centerline of the rear tandem axle must be 146 4 inches from the rear of the trailer.
(2) The standard trailer for mid-roof tractors is an empty two-axle tanker trailer 421 feet long by 140 inches high.
(i) It has a 401 feet long cylindrical tank with a 70007 gallon capacity, smooth surface, and rounded ends.
(ii) The standard tanker trailer does not include any aerodynamic features such as side fairings, but does include a centered 20 inch manhole, side-centered ladder, and lengthwise walkway. It includes dual 24.5 inch wheels.
(3) The standard trailer for low-roof tractors is an unloaded two-axle flat bed trailer 531 feet long and 102 inches wide.
(i) The deck height is 60.00.5 inches in the front and 55.00.5 inches in the rear. The standard trailer does not include any aerodynamic features such as side fairings.
(ii) It includes an air suspension and dual 22.5 inch wheels on tandem axles spread up to 122 inches apart between axle centerlines, measured along the length of the trailer. [76 FR 57398, Sept. 15, 2011, as amended at 78 FR 36392, June 17, 2013; 79 FR 23750, Apr. 28, 2014]