39. The expert of OICA reported on the activities of an internal task force on exterior acoustic signalling established by the European Automobile Manufacturers Association (ACEA) (GRBP-79-39). GRBP took note of this information and agreed to request an update on this topic at the next session.

31. GRBP was briefed on the activities of the OICA/ACEA Task Force on Exterior Acoustic Signalling (GRBP-81-31) that aimed at proposing a framework for exterior acoustic signals specifications and harmonizing requirements, without defining the need for acoustic signals. GRBP noted that the Task Force was reviewing the existing exterior sound signalling in UN Regulations Nos. 28 (Audible warning signal), 97 (Vehicle Alarm Systems), 162 (Immobilizers), 163 (Alarm Systems), 116 (Anti-theft and alarm systems), 138 (QRTV) and 165 (Reverse Warning Sounds). Other or future regulations/standards could be considered at a later stage, for example, the ongoing GRSP work on child presence inside the vehicle or possible additional sounds coming from automatic driven vehicles.