Home / Standards / GB/T 37531-2019 GB/T 37531-2019 Active Single turnout for straddle monorail transit 跨座式单轨交通单开道岔 Standard Type GBT ICS 45.080 CCS Q84 Status 现行 Issue Date 2019-06-04 Implementation 2020-01-01 Responsible Dept 住房城乡建设部 Drafting Unit N/A