Informal Working Group for the Development of a UN Regulation on Quiet Road Transport Vehicles | Session 1 | 10-11 Dec 2014
Tokyo
Agenda Item 5.4.
Review of specification 6.2.

5.4.1 OA sound level above limit + xx dB(A) for vehicle without AVAS (§6.2) :
The IWG worked out a revised wording based on OICA proposal:
If the vehicle without an AVAS or another sound emitting device (e.g. horn or sirene) fitted fulfils the overall levels as specified in table 2 below with a margin of +[x] dB(A), the specification for one-third octave bands and the frequency shift do not apply.

WBU underlines that it does not motivate manufacturers to increase the level to not to have to follow the specification for one-third octave bands and the frequency shift.

France : Margin has to be proposed with consideration of the absence of the specification for one-third octave bands and the frequency shift do not necessary do not reduce safety.

Germany: Margin has to be proposed to consider trucks and noisy equipment.

OICA and IMMA are invited to give a suitable value of “x”.

5.4.2 Reverse alarm (§6.2.2)
France proposes to delete sentence on vehicles already equipped with an audible device indicating the backing of the vehicle.

OICA propose a new sentence:
[For vehicles already equipped with an audible device indicating the backing of the vehicle with a sound level >47dB(A) the requirements of this paragraph do not apply.]

5.4.3 Cut-off of the sound after a certain speed
To be develop during next meeting.

5.4.4 Specifications on maximum sound level for AVAS
Germany proposes to have specifications on maximum sound level for AVAS. For example : “When tested under the conditions of Annex 3 paragraph 3.3, the vehicle shall emit sound that has an overall sound level for the applicable test condition less or equal as specified in table 2 below with a margin of +[x].”

5.4.5 Deactivation (OICA) : Not needed
The delete of Deactivation function was confirmed by OICA and by the IWG.

Japan and WBU underlined that that deactivation shall not be possible. Eventually a clarifying remarks within the section that describes ‘pause functionality’ may become necessary.

Germany and France confirmed that Deactivation function is clearly forbidden regarding the following specification of the Pause function : “Pause function shall be deactivated when the vehicle is restarted upon each vehicle turn-off”.

Japan will propose a sentence to be added to clarify forbidden function.