Methods of Measurement. 6.2.1.1. The sound emitted by the vehicle type submitted for approval shall be measured by the method(s) described in Annex 3 to this Regulation for the vehicle in motion and for the vehicle when stationary;5 in the case of a vehicle with an electric motor or with an internal combustion engine that does not operate when the vehicle is stationary, the emitted sound shall only be measured when the vehicle is in motion. If the vehicle has user selectable software programs or modes which affect the sound emission of the vehicle, all these modes shall be in compliance with the requirements in this paragraph. Testing shall be based on the worst case scenario. For hybrid electric vehicles, the tests shall be performed twice under the following conditions: (a) Condition A: The batteries shall be at their maximum state of charge; if more than one 'hybrid mode' is available, the most electric hybrid mode shall be selected for the test; (b) Condition B: The batteries shall be at their minimum state of charge; if more than one 'hybrid mode' is available, the most fuel-consuming hybrid mode shall be selected for the test. The final result is the highest of the test results for conditions A and B. 6.2.1.2. The value(s) measured in accordance with the provisions of paragraph 6. 2.1.1. above shall be entered in the test report and on a form conforming to the model in Annex 1 to this Regulation. 6.2.1.3. The sound level determined by the method described in paragraph 3.1. of Annex 3 to this Regulation when the vehicle is in motion shall not exceed the limits prescribed (for new vehicles and new exhaust or silencing systems) in Annex 4 to this Regulation for the category to which the vehicle belongs.
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Sources: Agreement Concerning the Adoption of Harmonized Technical United Nations Regulations for Wheeled Vehicles, Agreement Concerning the Adoption of Harmonized Technical United Nations Regulations for Wheeled Vehicles, Agreement Concerning the Adoption of Harmonized Technical United Nations Regulations for Wheeled Vehicles
Methods of Measurement. 6.2.1.1. The sound emitted by the vehicle type submitted for approval shall be measured by the method(s) described in Annex 3 to this Regulation for the vehicle in motion and for the vehicle when stationary;5 in the case of a vehicle with an electric motor or with an internal combustion engine that does not operate when the vehicle is stationary, the emitted sound shall only be measured when the vehicle is in motion. If the vehicle has user selectable software programs or modes which affect the sound emission of the vehicle, all these modes shall be in compliance with the requirements in this paragraph. Testing shall be based on the worst case scenario. For hybrid electric vehicles, the tests shall be performed twice under the following conditions:
(a) Condition A: The batteries shall be at their maximum state of charge; if more than one 'hybrid mode' is available, the most electric hybrid mode shall be selected for the test;
(b) Condition B: The batteries shall be at their minimum state of charge; if more than one 'hybrid mode' is available, the most fuel-consuming hybrid mode shall be selected for the test.
5 A test is made on a stationary vehicle in order to provide a reference value for administrations which use this method to check vehicles in use. The final result is the highest of the test results for conditions A and B.
6.2.1.2. The value(s) measured in accordance with the provisions of paragraph 6.
2.1.1. above shall be entered in the test report and on a form conforming to the model in Annex 1 to this Regulation.
6.2.1.3. The sound level determined by the method described in paragraph 3.1. of Annex 3 to this Regulation when the vehicle is in motion shall not exceed the limits prescribed (for new vehicles and new exhaust or silencing systems) in Annex 4 to this Regulation for the category to which the vehicle belongs.
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