['Air Programs']
['Mobile Emission Sources']
09/05/2023
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(a)(1) Prior to distribution in commerce of vehicles of a specific configuration, the first manufacturer of such vehicle must verify such configurations in accordance with the requirements of this subpart.
(2) [Reserved]
(3) At any time following receipt of notice under paragraph (a)(2)(iii) of this section with respect to a configuration, the Administrator may require that the manufacturer ship test vehicles to an EPA test facility for the required production verification testing.
(b) The requirements for purposes of testing by the Administrator and selective enforcement auditing with regard to each vehicle configuration consist of:
(1) Testing in accordance with §205.160-4 of a vehicle selected in accordance with §205.160-2.
(2) Compliance of the test vehicle with the applicable standard when tested in accordance with §205.160-4.
(c)(1) In lieu of testing vehicles of every configuration as described in paragraph (b) of this section, the manufacturer may elect to verify the configuration based on representative testing. The requirements of representative testing are:
(i) Grouping configurations into categories where each category is determined by a separate combination of at least the following parameters (a manufacturer may use more parameters):
(A) Engine type: (1) Gasoline-two stroke; (2) gasoline-four stroke; (3) gasoline-rotary; and (4) other.
(B) Engine displacement.
(C) Engine configuration: (1) Number of cylinders; and (2) cylinder arrangement (i.e., in line, opposed, etc.)
(ii) Identifying the configuration within each category which emits the highest A-weighted sound level (in dB).
(iii) Testing in accordance with §205.160-4 of a vehicle selected in accordance with §205.160-2 which much be a vehicle of the configuration which is identified pursuant to paragraph (c)(1)(ii) of this section as having the highest sound pressure level (estimated or actual) within the category.
(iv) Demonstrating compliance of that vehicle with the applicable standard when tested in accordance with the test procedure specified in Appendix I.
(2) Where the requirements of paragraph (c)(1) of this section are complied with, all those configurations contained within a category are considered represented by the tested vehicle.
(3) Where the manufacturer tests a vehicle configuration which has not been determined as having the highest sound pressure level of a category, but all other requirements of paragraph (c)(1) of this section are complied with, all those configurations contained within that category which are determined to have sound pressure levels not greater than the tested vehicle are considered to be represented by the tested vehicle; however, a manufacturer must for purposes of Testing by the Administrator and Selective Enforcement Auditing verify according to the requirements of (b)(1) and/or (c)(1) of this section any configurations in the subject category which have a higher sound pressure level than the vehicle configuration tested.
(d) A manufacturer may elect for purposes of Testing by the Administrator and Selective Enforcement Auditing to use representative testing pursuant to paragraph (c) of this section for all or part of his product line.
(e) The manufacturer has the following alternatives if any test vehicle is determined to not be in compliance with applicable standards:
(1) In the case of representative testing, a new test vehicle from another configuration must be selected according to the requirements of paragraph (c) of this section, in order to verify the configurations represented by the non-compliant vehicle.
(2) Modify the test vehicle and demonstrate by testing that it meets applicable standards. The manufacturer must modify all production vehicles of the same configuration in the same manner as the test vehicle before distribution into commerce.
[45 FR 86708, Dec. 31, 1980, as amended at 47 FR 57720, Dec. 28, 1982]
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