Dynamic signs are increasingly used around the world to guide the flow of people and provide warnings. Signs for enhancing the convenience of public spaces require visibility to increase awareness and understanding, and flexibility to change the content according to the circumstances. Dynamic signs can satisfy both of these requirements. In particular, technology that changes the display according to the viewer and the surrounding environment will play a major role in the IoT era when people and the environment are connected by digital technology.

However, ergonomic-based requirements related to dynamic sign visibility and safety had not yet been developed, so there were concerns that the signs might cause misunderstanding and confusion. In order to prevent the occurrence of unexpected incidents as much as possible, there were hopes for establishment of uniform standards related to dynamic sign design and usage.

AIST proposed the general requirements of an international standard for dynamic signs with Mitsubishi Electric Corporation, and the proposal was adopted as ISO 23456-1:2021.

The more effective sign system will be established by developing individual standards under this international standard. We are expecting for the society sharing with various age groups, cultures, and perceptual and physical characteristics, such as the elderly and wheelchair users under the concept of accessibility for all people.