Text prepared by the experts from the Informal Working Group on Additional Sound Emission Provisions (IWG ASEP) in order to improve the current wording for better clarification.

Proposal to introduce Real Driving Additional Sound Emission Provisions (RD-ASEP) as a preliminary test procedure for the purpose of collecting experience on the complete new test and evaluation concept.

The Task Force on Vehicles’ Sound (TF-VS) was established to review sound emissions regulations for M, N, and L category vehicles under UN Regulations 51, 9, 28, 41, 59, 63, 92, 117, and 138. The TF-VS will identify available studies, analyze data including Phase 3, review interactions between vehicle sound emissions and environmental noise, and propose improvements. THe group is chaired by France with OICA as Secretary and will focus initially on M and N vehicles.

Study to evaluate the potential and the feasibility of limit value reductions in type approval and the translation to real road traffic conditions

Purpose of study was to specify any potential improvement or deterioration of noise performance in light of the other parameters and to provide the necessary information regarding the possible additional tightening of the limits, without undermining the overall balance that has to take into account also other performances.

Proposal by the experts from the Informal Working Group on Additional Sound Emission Provisions (IWG ASEP) in order to amend Real Driving Additional Sound Emission Provisions (RD-ASEP) as a preliminary test procedure for the purpose of collecting experience on the complete new test and evaluation concept.

Proposal to change the date of compliance for category N1 or for vehicle types of category M1 derived from N1

Text prepared by the experts of the Informal Working group on Measurement Uncertainties (IWB MU) in order to introduce a general guideline.

Text prepared by the Informal Working Group on Measurement Uncertainties (IWG MU) as a document of reference. IWG MU was given the first task to amend UN Regulations Nos. 51 and No.117 to reduce measurement uncertainties

Text prepared by the experts from the Informal Working Group on Additional Sound Emission Provisions (IWG ASEP) in order to improve the current wording for better clarification.

Proposal to introduce Real Driving Additional Sound Emission Provisions (RD-ASEP) as a preliminary test procedure for the purpose of collecting experience on the complete new test and evaluation concept.

The Task Force on Vehicles’ Sound (TF-VS) was established to review sound emissions regulations for M, N, and L category vehicles under UN Regulations 51, 9, 28, 41, 59, 63, 92, 117, and 138. The TF-VS will identify available studies, analyze data including Phase 3, review interactions between vehicle sound emissions and environmental noise, and propose improvements. THe group is chaired by France with OICA as Secretary and will focus initially on M and N vehicles.

Study to evaluate the potential and the feasibility of limit value reductions in type approval and the translation to real road traffic conditions

Purpose of study was to specify any potential improvement or deterioration of noise performance in light of the other parameters and to provide the necessary information regarding the possible additional tightening of the limits, without undermining the overall balance that has to take into account also other performances.

Proposal by the experts from the Informal Working Group on Additional Sound Emission Provisions (IWG ASEP) in order to amend Real Driving Additional Sound Emission Provisions (RD-ASEP) as a preliminary test procedure for the purpose of collecting experience on the complete new test and evaluation concept.

Proposal to change the date of compliance for category N1 or for vehicle types of category M1 derived from N1

Text prepared by the experts of the Informal Working group on Measurement Uncertainties (IWB MU) in order to introduce a general guideline.

Text prepared by the Informal Working Group on Measurement Uncertainties (IWG MU) as a document of reference. IWG MU was given the first task to amend UN Regulations Nos. 51 and No.117 to reduce measurement uncertainties

Text prepared by the experts from the Informal Working Group on Additional Sound Emission Provisions (IWG ASEP) in order to improve the current wording for better clarification.

Proposal to introduce Real Driving Additional Sound Emission Provisions (RD-ASEP) as a preliminary test procedure for the purpose of collecting experience on the complete new test and evaluation concept.

The Task Force on Vehicles’ Sound (TF-VS) was established to review sound emissions regulations for M, N, and L category vehicles under UN Regulations 51, 9, 28, 41, 59, 63, 92, 117, and 138. The TF-VS will identify available studies, analyze data including Phase 3, review interactions between vehicle sound emissions and environmental noise, and propose improvements. THe group is chaired by France with OICA as Secretary and will focus initially on M and N vehicles.

Study to evaluate the potential and the feasibility of limit value reductions in type approval and the translation to real road traffic conditions

Purpose of study was to specify any potential improvement or deterioration of noise performance in light of the other parameters and to provide the necessary information regarding the possible additional tightening of the limits, without undermining the overall balance that has to take into account also other performances.

Proposal by the experts from the Informal Working Group on Additional Sound Emission Provisions (IWG ASEP) in order to amend Real Driving Additional Sound Emission Provisions (RD-ASEP) as a preliminary test procedure for the purpose of collecting experience on the complete new test and evaluation concept.

Proposal to change the date of compliance for category N1 or for vehicle types of category M1 derived from N1

Text prepared by the experts of the Informal Working group on Measurement Uncertainties (IWB MU) in order to introduce a general guideline.

Text prepared by the Informal Working Group on Measurement Uncertainties (IWG MU) as a document of reference. IWG MU was given the first task to amend UN Regulations Nos. 51 and No.117 to reduce measurement uncertainties

Text prepared by the experts from the Informal Working Group on Additional Sound Emission Provisions (IWG ASEP) in order to improve the current wording for better clarification.

Proposal to introduce Real Driving Additional Sound Emission Provisions (RD-ASEP) as a preliminary test procedure for the purpose of collecting experience on the complete new test and evaluation concept.

The Task Force on Vehicles’ Sound (TF-VS) was established to review sound emissions regulations for M, N, and L category vehicles under UN Regulations 51, 9, 28, 41, 59, 63, 92, 117, and 138. The TF-VS will identify available studies, analyze data including Phase 3, review interactions between vehicle sound emissions and environmental noise, and propose improvements. THe group is chaired by France with OICA as Secretary and will focus initially on M and N vehicles.

Study to evaluate the potential and the feasibility of limit value reductions in type approval and the translation to real road traffic conditions

Purpose of study was to specify any potential improvement or deterioration of noise performance in light of the other parameters and to provide the necessary information regarding the possible additional tightening of the limits, without undermining the overall balance that has to take into account also other performances.

Proposal by the experts from the Informal Working Group on Additional Sound Emission Provisions (IWG ASEP) in order to amend Real Driving Additional Sound Emission Provisions (RD-ASEP) as a preliminary test procedure for the purpose of collecting experience on the complete new test and evaluation concept.

Proposal to change the date of compliance for category N1 or for vehicle types of category M1 derived from N1

Text prepared by the experts of the Informal Working group on Measurement Uncertainties (IWB MU) in order to introduce a general guideline.

Text prepared by the Informal Working Group on Measurement Uncertainties (IWG MU) as a document of reference. IWG MU was given the first task to amend UN Regulations Nos. 51 and No.117 to reduce measurement uncertainties

Text prepared by the experts from the Informal Working Group on Additional Sound Emission Provisions (IWG ASEP) in order to improve the current wording for better clarification.

Proposal to introduce Real Driving Additional Sound Emission Provisions (RD-ASEP) as a preliminary test procedure for the purpose of collecting experience on the complete new test and evaluation concept.

The Task Force on Vehicles’ Sound (TF-VS) was established to review sound emissions regulations for M, N, and L category vehicles under UN Regulations 51, 9, 28, 41, 59, 63, 92, 117, and 138. The TF-VS will identify available studies, analyze data including Phase 3, review interactions between vehicle sound emissions and environmental noise, and propose improvements. THe group is chaired by France with OICA as Secretary and will focus initially on M and N vehicles.

Study to evaluate the potential and the feasibility of limit value reductions in type approval and the translation to real road traffic conditions

Purpose of study was to specify any potential improvement or deterioration of noise performance in light of the other parameters and to provide the necessary information regarding the possible additional tightening of the limits, without undermining the overall balance that has to take into account also other performances.

Proposal by the experts from the Informal Working Group on Additional Sound Emission Provisions (IWG ASEP) in order to amend Real Driving Additional Sound Emission Provisions (RD-ASEP) as a preliminary test procedure for the purpose of collecting experience on the complete new test and evaluation concept.

Proposal to change the date of compliance for category N1 or for vehicle types of category M1 derived from N1

Text prepared by the experts of the Informal Working group on Measurement Uncertainties (IWB MU) in order to introduce a general guideline.

Text prepared by the Informal Working Group on Measurement Uncertainties (IWG MU) as a document of reference. IWG MU was given the first task to amend UN Regulations Nos. 51 and No.117 to reduce measurement uncertainties

Text prepared by the experts from the Informal Working Group on Additional Sound Emission Provisions (IWG ASEP) in order to improve the current wording for better clarification.

Proposal to introduce Real Driving Additional Sound Emission Provisions (RD-ASEP) as a preliminary test procedure for the purpose of collecting experience on the complete new test and evaluation concept.

The Task Force on Vehicles’ Sound (TF-VS) was established to review sound emissions regulations for M, N, and L category vehicles under UN Regulations 51, 9, 28, 41, 59, 63, 92, 117, and 138. The TF-VS will identify available studies, analyze data including Phase 3, review interactions between vehicle sound emissions and environmental noise, and propose improvements. THe group is chaired by France with OICA as Secretary and will focus initially on M and N vehicles.

Study to evaluate the potential and the feasibility of limit value reductions in type approval and the translation to real road traffic conditions

Purpose of study was to specify any potential improvement or deterioration of noise performance in light of the other parameters and to provide the necessary information regarding the possible additional tightening of the limits, without undermining the overall balance that has to take into account also other performances.

Proposal by the experts from the Informal Working Group on Additional Sound Emission Provisions (IWG ASEP) in order to amend Real Driving Additional Sound Emission Provisions (RD-ASEP) as a preliminary test procedure for the purpose of collecting experience on the complete new test and evaluation concept.

Proposal to change the date of compliance for category N1 or for vehicle types of category M1 derived from N1

Text prepared by the experts of the Informal Working group on Measurement Uncertainties (IWB MU) in order to introduce a general guideline.

Text prepared by the Informal Working Group on Measurement Uncertainties (IWG MU) as a document of reference. IWG MU was given the first task to amend UN Regulations Nos. 51 and No.117 to reduce measurement uncertainties

Text prepared by the experts from the Informal Working Group on Additional Sound Emission Provisions (IWG ASEP) in order to improve the current wording for better clarification.

Proposal to introduce Real Driving Additional Sound Emission Provisions (RD-ASEP) as a preliminary test procedure for the purpose of collecting experience on the complete new test and evaluation concept.

The Task Force on Vehicles’ Sound (TF-VS) was established to review sound emissions regulations for M, N, and L category vehicles under UN Regulations 51, 9, 28, 41, 59, 63, 92, 117, and 138. The TF-VS will identify available studies, analyze data including Phase 3, review interactions between vehicle sound emissions and environmental noise, and propose improvements. THe group is chaired by France with OICA as Secretary and will focus initially on M and N vehicles.

Study to evaluate the potential and the feasibility of limit value reductions in type approval and the translation to real road traffic conditions

Purpose of study was to specify any potential improvement or deterioration of noise performance in light of the other parameters and to provide the necessary information regarding the possible additional tightening of the limits, without undermining the overall balance that has to take into account also other performances.

Proposal by the experts from the Informal Working Group on Additional Sound Emission Provisions (IWG ASEP) in order to amend Real Driving Additional Sound Emission Provisions (RD-ASEP) as a preliminary test procedure for the purpose of collecting experience on the complete new test and evaluation concept.

Proposal to change the date of compliance for category N1 or for vehicle types of category M1 derived from N1

Text prepared by the experts of the Informal Working group on Measurement Uncertainties (IWB MU) in order to introduce a general guideline.

Text prepared by the Informal Working Group on Measurement Uncertainties (IWG MU) as a document of reference. IWG MU was given the first task to amend UN Regulations Nos. 51 and No.117 to reduce measurement uncertainties

Text prepared by the experts from the Informal Working Group on Additional Sound Emission Provisions (IWG ASEP) in order to improve the current wording for better clarification.

Proposal to introduce Real Driving Additional Sound Emission Provisions (RD-ASEP) as a preliminary test procedure for the purpose of collecting experience on the complete new test and evaluation concept.

The Task Force on Vehicles’ Sound (TF-VS) was established to review sound emissions regulations for M, N, and L category vehicles under UN Regulations 51, 9, 28, 41, 59, 63, 92, 117, and 138. The TF-VS will identify available studies, analyze data including Phase 3, review interactions between vehicle sound emissions and environmental noise, and propose improvements. THe group is chaired by France with OICA as Secretary and will focus initially on M and N vehicles.

Study to evaluate the potential and the feasibility of limit value reductions in type approval and the translation to real road traffic conditions

Purpose of study was to specify any potential improvement or deterioration of noise performance in light of the other parameters and to provide the necessary information regarding the possible additional tightening of the limits, without undermining the overall balance that has to take into account also other performances.

Proposal by the experts from the Informal Working Group on Additional Sound Emission Provisions (IWG ASEP) in order to amend Real Driving Additional Sound Emission Provisions (RD-ASEP) as a preliminary test procedure for the purpose of collecting experience on the complete new test and evaluation concept.

Proposal to change the date of compliance for category N1 or for vehicle types of category M1 derived from N1

Text prepared by the experts of the Informal Working group on Measurement Uncertainties (IWB MU) in order to introduce a general guideline.

Text prepared by the Informal Working Group on Measurement Uncertainties (IWG MU) as a document of reference. IWG MU was given the first task to amend UN Regulations Nos. 51 and No.117 to reduce measurement uncertainties

Text prepared by the experts from the Informal Working Group on Additional Sound Emission Provisions (IWG ASEP) in order to improve the current wording for better clarification.