Proposal to simplify the RD-ASEP SEM assessment method for electric vehicles using the Supplement 11 to UN R51 slope assessment approach, limit factor x between 0.10 and 0.95, apply AVAS as a uniform 66 dB(A) maximum up to 50 km/h, and replace the existing SEM-AVAS term with this revised strategy. The tyre rolling sound curve, acceleration term from UN R51.03 Supplement 11, and AVAS term aligned with UN R138 are applied, while no other SEM parts are used.