Home / Standards / GB/T 40578-2021 GB/T 40578-2021 Active Measurement methods for noise emitted by light-duty vehicles in multiple driving mode conditions 轻型汽车多工况行驶车外噪声测量方法 Standard Type GBT ICS 43.040 CCS T34 Status 现行 Issue Date 2021-10-11 Implementation 2022-05-01 Responsible Dept 工业和信息化部 Drafting Unit N/A