*4.2.3 Using method of the PSS*

Before exploring the draft plans, users access the Web-GIS support system from the client PC and download the VR support system. Users start by exploring the draft plans and create a draft plan. They enter the contents of the draft plan on the interface of the tool using a function that facilitates exploration of the improvement plans (function (a)). Using function (d), a function for the library of rebuilding plans users can enact a rebuilding plan by clicking an arbitrary point on the map of the interface after selecting a building icon.

After entering the contents of the draft plan, users can calculate the DMPE of the draft plan and display the result of comparison with the current condition using (b) a function for computing and comparing the DMPE. When creating the spatial townscape image, first, users save information about the improvement plan as text data using function (c) a function for outputting the information about the improvement plan. After that, users can display the VR image reflecting the draft plan read in as text data using function (e) a function for reading information about the improvement plan (**Figure 8**).

*Trends in Urban Planning and Measures of Disaster Risks in Japan – Roles... DOI: http://dx.doi.org/10.5772/intechopen.109461*

## **5. Conclusions**

Grasping natural disaster risks is very important for planning urban sustainability. In the cities like Japanese cities, where the population is declining, it is necessary to induce residents to withdraw from the areas with high disaster risk, and the induction of the relocation to the areas without disaster risk from a long-term perspective was explained.

In order to promote the formation of such cities, the development of planning support technology introduced in this chapter is one of the useful means. Especially, it is expected that the PSS is useful to provide quantitative information such as the ability of mutual assistance, to support the examination of initial response activities, and to examine the plans that minimize damage from natural disasters.

In the future, with the spread of technologies such as AI and big data analysis technology, the role of PSS is expected to become more common. It is preferable to include a Conclusion(s) section, which will summarize the content of the book chapter.

### **Acknowledgements**

This research was funded by Japan Society for the Promotion of Science (JSPS) KAKENHI, grant number 15 K18177".
