Home / Standards / GB/T 31443-2015 GB/T 31443-2015 Active Rating of pre-warning of highway traffic condition under snow and icy weather conditions 冰雪天气公路通行条件预警分级 Standard Type GBT ICS 03.220.20 CCS R85 Status 现行 Issue Date 2015-05-15 Implementation 2015-08-01 Responsible Dept 国家标准委 Drafting Unit N/A