専門家 Use 境界 Canon 解説

Primary evidence for spatial responsibility and boundary validation.

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世界的合意：ウェブ地図の境界利用の禁止

The following authorities share a consistent, global consensus: Web-based maps and non-geodetic spatial tools are referential and carry no legal authority for professional use.

Authority Body Stated Limitation Reference
Google / Tech Assumption of user risk; actual conditions differ. View Canon
USGS / National Not the legal record; no authority for boundaries. View Canon
NGA / Defense Unacceptable for mission-critical operations. View Canon
GSI / OS / Regional Positional variation; no responsibility accepted. View Canon
Official Wording: Google Maps / Earth TOS
"When you use Google Maps/Google Earth's map data, traffic, directions, and other content, you may find that actual conditions differ from the map results and content, so exercise your independent judgment and use Google Maps/Google Earth at your own risk."

Primary Source (External, Content maintained by the originating authority):

https://www.google.com/help/terms_maps/