China 'GB/T 41175-2021
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 41175-2021
Assistive products for persons with vision impairments and persons with vision and hearing impairments -- Acoustic and tactile signals for pedestrian traffic lights 视力障碍者和视听障碍者用辅助器具? 行人交通信号灯的声音和触觉信号
Issued Date:2021/12/31
Implemented Date:2021/12/31
Issued by:
The Standardization Administration of the People's Republic of China
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