ブロック塀安全点検マップ

Field notes

The project separates public observation from professional assessment through a fixed-field form and an explicit safety checklist. Contributors must record from a safe roadside position, avoid walls and private property, and confirm that they are not seeking construction leads. The map aggregates reports at pins without publishing reporter identities or counts, while the underlying map materials cite Japanese geospatial tiles alongside GEBCO and VMAP0 source data.