8. The experts from OICA and several Contracting Parties reported on the ongoing ASEP/ RD-ASEP study (GRBP-81-32-Rev.1). the consortium including several CPs and OICA presented a report on the ongoing Real Driving – Additional Sound Emission Provisions (RD-ASEP) monitoring study that aims at modifying the ASEP test protocol to get closer to real drive conditions and to allow the sound evaluation for any kind of vehicle/propulsion technology. A sound expectation model was defined, but verification would be needed for robustness of this model. GRBP noted that further data and analysis would be required for electric vehicles under cruising and full acceleration situations. To this end, OICA invited Contracting Parties and NGOs to conduct tests and to provide data to OICA.