Home / Standards / GB/T 20149-2006 GB/T 20149-2006 Active Road traffic lights - Photometric properties of 200mm roundel signals 道路交通信号灯 200mm圆形信号灯的光度特性 Standard Type GBT ICS 93.080.30;29.140.01 CCS K70 Status 现行 Issue Date 2006-03-06 Implementation 2006-11-01 Responsible Dept 中国轻工业联合会 Drafting Unit N/A