RDASEP-TFDA-16-04
Amendments to the RD-ASEP Sound Expectation Model SEM
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Document presents considerations on revising the AVAS term in the RD-ASEP Sound Expectation Model to align with UN R138.02 specifications for electric and hybrid electric vehicles. Two options are discussed: Option 1 implements only constant speed specifications from UN R138.02, while Option 2 extends this with an additional term to reflect interpretation of paragraph 6.2.8 for accelerated conditions. A revised AVAS term formula applicable for vehicle speeds up to 50 km/h is proposed.
Presently unstable acronym related to minimum vehicle sound levels. Commonly rendered as Audible Vehicle Alerting Systems, Approaching Vehicle Audible Systems; occasionally Approaching Vehicle Audible Signals