Home / Standards / GB/T 39900-2021 GB/T 39900-2021 Active General technical requirements for the road traffic signal control system 道路交通信号控制系统通用技术要求 Standard Type GBT ICS 93.080.30 CCS R87 Status 现行 Issue Date 2021-03-09 Implementation 2021-10-01 Responsible Dept 公安部 Drafting Unit N/A