Document ID: chunk:federal_register_of_legislation:F2024L00447:front:0:p16
Version: federal_register_of_legislation:F2024L00447
Segment Type: other
Provision Reference: 
Character Range: 46453–49485

to demonstrate compliance of the representative vehicle with the requirements of this Regulation.

              6.4.1.2. The authority shall select additional vehicles according to the requirements of paragraph 6.4.3. for PEMS testing carried out by a Technical Service to demonstrate compliance of the selected vehicles with the requirements of this Regulation. The technical criteria for selection of an additional vehicle according to paragraph 6.4.2. shall be recorded with the test results.

              6.4.1.3. With agreement of the authority, a PEMS test can also be driven by a different operator witnessed by a Technical Service, provided that at least the tests of the vehicles required by paragraphs 6.4.2.2. and 6.4.2.6. and in total at least 50 per cent of the PEMS tests required by paragraph 6.4.3.7. for validating the PEMS test family are driven by a Technical Service. In such case the Technical Service remains responsible for the proper execution of all PEMS tests pursuant to the requirements of this Regulation.

              6.4.1.4. A PEMS test results of a specific vehicle may be used for validating different PEMS test families under the following conditions:

                  (a) The vehicles included in all PEMS test families to be validated are approved by a single authority according to this Regulation and this authority agrees to the use of the specific vehicle's PEMS test results for validating different PEMS test families;

                  (b) Each PEMS test family to be validated includes a vehicle emission type, which comprises the specific vehicle.

              6.4.2. For each validation, the applicable responsibilities are considered to be borne by the manufacturer of the vehicles in the respective family, regardless of whether this manufacturer was involved in the PEMS test of the specific vehicle emission type.

              6.4.3. Selection of vehicles for PEMS testing when validating a PEMS test family

              When selecting vehicles from a PEMS test family, it shall be ensured that the following technical characteristics relevant for criteria emissions are covered by a PEMS test. A particular vehicle selected for testing can be representative for different technical characteristics. For the validation of a PEMS test family vehicles shall be selected for PEMS testing as follows:

              6.4.3.1. For each combination of fuels (e.g. petrol-LPG, petrol-NG, petrol only), on which some vehicles of the PEMS test family can operate, at least one vehicle that can operate on such combination of fuels shall be selected for PEMS testing.

              6.4.3.2. The manufacturer shall specify a value PMRH (= highest power-to- mass-ratio of all vehicles in the PEMS test family) and a value PMRL (= lowest power-to-mass-ratio of all vehicles in the PEMS test family). At least one vehicle configuration representative for the specified PMRH and one vehicle configuration representative for the specified PMRL of a PEMS test family shall be selected