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The old test method of Directive 70/157/EEC (which it will repeal) would be deleted and replaced by the new test method already mentioned in the Directive but for monitoring purposes only. The noise limit values would be lowered in two steps of 2 dB(A) each for passenger cars, buses and light trucks; for heavy duty vehicles the reduction will be 1 dB(A) in the first step and 2 dB(A) in the second step. The first step is foreseen to apply two years after the date of publication of the proposal in the OJEU; the second step shall follow after further three years. The proposed reduction would apply to the noise values resulting from the application of the new test method.
Additional sound emission provisions (ASEP) would be included in the type-approval procedure and the existing derogations for certain vehicle types would be revised. ASEP are preventive requirements intended to cover driving conditions of the vehicle in real traffic
outside the type-approval driving cycle. These driving conditions are environmentally relevant and it needs to be ensured that the sound emission of a vehicle under street driving conditions does not differ significantly from what can be expected from the type approval test result for this specific vehicle.
An additional Annex with requirements regarding the minimum noise ('Approaching Vehicle Audible Systems') of electric and hybrid electric vehicles is proposed to be added. These requirements shall ensure that only adequate sound generating devices are used and it shall lead to a harmonisation of the applied technology. The fitting as such would not be mandated and would remain an option for the vehicle manufacturer.
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