Home / Standards / GB 10494-1989 GB 10494-1989 Abolished Technical specification for crossing signal equipment in wayside 铁路区间道口信号设备技术条件 Standard Type GB ICS 03.220.30 CCS S61 Status 废止 Issue Date 1989-03-22 Implementation 1989-10-01 Responsible Dept 国家铁路局 Drafting Unit N/A