Okayama Prefecture publishes infrastructure data that is open to the public, easily accessible and highly reliable.
Temporary Website Suspension Due to System Maintenance [September 29, 2026 (Tuesday), 5:30 PM – 7:30 PM (JST)]
For more details, please refer to the full announcement. https://i-box.pref.okayama.jp/en/information/11
A "catalogue" service allows users to search and download Open data. Downloaded data is freely available for both commercial and non-commercial use.