GAR | GRB-50-08

25. GRB noted that WP.29, at its March 2009 session, had endorsed the proposal to set up an informal group on Minimum Sound Levels for silent vehicles (MSL). The expert from Japan introduced GRB-50-08 regarding a study on approach audible systems for hybrid and electric vehicles. He also presented a number of sample sounds (steady and non-steady) for approaching silent vehicles. The expert from the United States of America stressed the need that such sounds should not only be similar to that emitted by combustion engine, but also indicate the speed, direction as well as the acceleration or deceleration of the vehicle. He recalled that this information was important, especially for visually-impaired people.

Relates to QRTV-GTR |

Reference Number:	R134-28-01C
Submitted by:	Japan
Meeting Session(s):	28th R134 session (26-28 Aug)
Document date:	22 Jul 24
Regarding:	UN R134 Hydrogen Fuel Cell Safety \| GTR No. 13 Hydrogen/Fuel Cell Vehicles

Reference Number:	R134-28-01A
Submitted by:	CLEPA and OICA
Meeting Session(s):	28th R134 session (26-28 Aug)
Document date:	22 Jul 24
Regarding:	UN R134 Hydrogen Fuel Cell Safety
View full document file for more information

Reference Number:	R134-28-00B
Meeting Session(s):	28th R134 session (26-28 Aug)
Document date:	22 Jul 24
Regarding:	UN R134 Hydrogen Fuel Cell Safety

Reference Number:	R134-27-04
Submitted by:	BMW
Meeting Session(s):	27th R134 session (16 Jul)
Document date:	16 Jul 24
Regarding:	UN R134 Hydrogen Fuel Cell Safety \| GTR No. 13 Hydrogen/Fuel Cell Vehicles

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