Document ID: chunk:federal_register_of_legislation:F2024L00446:reg:16:p74
Version: federal_register_of_legislation:F2024L00446
Segment Type: reg
Provision Reference: reg 16 (pt 74/108)
Character Range: 1097767–1100568

the production series (e.g. for worst case testing), a full description shall be recorded. In selecting the test vehicle, the manufacturer and the responsible authority shall agree which vehicle model is representative for the interpolation family.
              In the case that vehicles within an interpolation family are equipped with different emission control systems that could have an effect on the emission behaviour, the manufacturer shall either demonstrate to the responsible authority that the test vehicle(s) selected and its (their) results from the Type 1 test are representative for the interpolation family, or demonstrate the fulfilment of the criteria emission within the interpolation family by testing one or more individual vehicles that differ in their emission control systems.
              For the measurement of emissions, the road load as determined with test vehicle H shall be applied. In the case of a road load matrix family, for the measurement of emissions, the road load as calculated for vehicle HM according to paragraph 5.1. of Annex B4 shall be applied.
              If at the request of the manufacturer the interpolation method is used (see paragraph 3.2.3.2. of Annex B7), an additional measurement of emissions shall be performed with the road load as determined with test vehicle L. Tests on vehicles H and L should be performed with the same test vehicle and shall be tested with the shortest n/v ratio (with a tolerance of ±1.5 per cent) within the interpolation family. In the case of a road load matrix family, an additional measurement of emissions shall be performed with the road load as calculated for vehicle LM according to paragraph 5.1. of Annex B4.
              Road load coefficients and the test mass of test vehicle L and H may be taken from different road load matrix families. They may also be taken from different road load families as long as the difference between these road load families has been demonstrated to and accepted by the responsible authority, and results from either applying paragraph 6.8. of Annex B4 or tyres taken from different tyre categories, while the requirements in paragraph 2.3.2. of this annex are maintained.
              2.3.2. CO2 interpolation range
              2.3.2.1. The interpolation method shall only be used if the difference in CO2 over the applicable cycle resulting from step 9 in Table A7/1 of Annex B7 between test vehicles L and H is between a minimum of 5 g/km and a maximum defined in paragraph 2.3.2.2. of this annex.
              2.3.2.2. The maximum difference in CO2 emissions allowed over the applicable cycle resulting from step 9 in Table A7/1 of Annex B7 between test vehicles L and H shall be 20 per cent plus 5 g/km of the CO2 emissions from vehicle H, but at least 15 g/km