Home / Standards / GB/T 44040-2024 GB/T 44040-2024 Active Measurement methods for noise emitted by heavy-duty vehicles in multiple driving mode conditions 重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 2024-05-28 Implementation 2025-01-01 Responsible Dept 工业和信息化部 Drafting Unit N/A