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Refs: |
gg5
https://www.stat.go.jp/english/data/jyutaku/1520205.html
Densely Inhabited District which is often referred to as DID and is defined as an area a city, town or village that is composed of
a groups of contiguous basic unit blocks each of which has a population density of about 4,000 inhabitants or more per square
kilometer, and whose total population exceeds 5,000 as of October 1, 1995.
https://news.yahoo.co.jp/articles/9c866064fbc850f2c716fb33f53d8a98f646233d
県警生活安全部によると、夜間や人口集中地区、空港周辺の飛行禁止などのルールは航空法などで規制。 |