ISO 28564-4:2023, Public information guidance systems-Part 4: Installation and assessment, was published in February, which was developed by ISO/TC 145/SC 1/WG 5, Public information guidance systems.

With its secretariat held by the Fundamental Standardization Sub-institute of CNIS, the WG 5 gathers 29 experts from 8 countries, including China, the U.S., the U.K., Japan and South Korea. Established in 2006, the working group has carried out fruitful work on international standardization of public information guidance system. The working group has developed other three standards in this field, which are ISO 28564-1:2010, Public information guidance systems-Part 1: Design principles and element requirements for location plans, maps and diagrams, ISO 28564-2:2016, Public information guidance systems-Part 2: Guidelines for the design and use of location signs and direction signs, and ISO 28564-3:2019, Public information guidance systems-Part 3: Guidelines for the design and use of information index signs.

ISO 28564-4:2023 specifies the principles, requirements and methods for the installation of public information guidance systems, and provides guidelines on the assessments of the outcomes of public information guidance systems. Its development refers to two Chinese voluntary national standards, GB/T 15566.1-2020, Public information guidance system-Setting principles and requirements-Part 1: General principles, and GB/T 38604-2020, Public information guidance systems-Assessment requirement.

The working group will further work on the international standardization of public information guidance system. Also, Chinese experts will keep sharing latest research achievements and learning from oversea peers.