Reference documents - Monitoring Procedure

Information regarding the Monitoring Procedure established in Directive 70/157/EEC and UNECE Regulation 51

Information to be communicated to the European Commission

The UNECE Working Group on vehicle noise (GRB) has developed a new test cycle that shall replace the existing test protocol with a better measurement method reproducing the sound levels generated by vehicles during normal driving in urban traffic. Before this method can be used for type-approval purposes, new limit values for this method need to be established. In order to obtain representative data to determine those values and for a solid impact assessment, vehicle manufacturers shall carry out the old and the new measurement methods in parallel. The old method will continue to be required in order to receive type-approval and the new method will be used for monitoring purposes.

From 1 July 2007 on all new motor vehicles, in order to receive type-approval on noise according to UNECE Regulation 51, have to undergo noise tests following Annex 3 and Annex 10. Member States shall ensure that the results of these tests are communicated to the European Commission and those Contracting Parties that express an interest. A similar provision has been introduced in the recent update of Directive 70/157/EEC1 and is applicable since 6 July 2008.

The Commission services have received some questions about the way by which the data shall be communicated. Therefore a data sheet has been prepared in co-operation with European type-approval authorities and test houses as they will be in most cases responsible for collecting and transmitting the data. The data sheet below gives an indication about the data expected for each motor vehicle to be type-approved and tested for noise emissions. The data should be sent to the dedicated mailbox entr-noise-monitoring-procedure@ec.europa.eu.

All data received will be made available via the CIRCA system with restricted access as this information is qualified as commercially sensitive.

Model of Data sheet [74 KB] to be completed (updated version of 18.11.2008)

• Please note that engine speed (n вв') is required for M1 and N1 vehicles.
• Please note that "vehicle type" refers to the manufacturer type code and preferably to the commercial name of the vehicle, but not to internal codes