Home / Standards / GB/T 20501.3-2017 GB/T 20501.3-2017 Active Public information guidance systems—Design principles and requirements for guidance elements—Part 3: Location plans 公共信息导向系统 导向要素的设计原则与要求 第3部分：平面示意图 Standard Type GBT ICS 01.080.01 CCS A22 Status 现行 Issue Date 2017-05-12 Implementation 2017-12-01 Responsible Dept 国家标准委 Drafting Unit N/A