Miyazaki in context: Street-network sprawl trends

Miyazaki in context

2.12.42.7<19751976–19901991–20052006–2020SNDi of street additions
2.12.42.7<19751976–19901991–20052006–2020SNDi of entire street network
MiyazakiJapan (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Miyazaki plotted against Japan. The SNDi of new construction in Miyazaki peaked in 1976-1990, while Japan followed a zig-zag trend with an overall increase. Most recently, Miyazaki's incremental SNDi fell from 2.55 to 2.16 between 1991-2005 and 2006-2020. In terms of the aggregate network, Miyazaki ranked 53rd out of 135 in Japan as of 2020.

New Street Additions (2006–2020)

SNDi value
2.16
Rank in Japan
37th of 135

Entire Network (Aggregate)

SNDi value
2.14
Rank in Japan
53rd of 135

Rankings go from most connected to most disconnected — rank 1 is the most connected.

What about similarly populated cities?

2.12.83.54.2<19751976–19901991–20052006–2020SNDi of street additions
2.12.83.54.2<19751976–19901991–20052006–2020SNDi of entire street network
MiyazakiNandurbarZhaishang

In new street additions, Miyazaki built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Nandurbar fluctuated in its street-construction patterns and Zhaishang built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full network, Miyazaki and Nandurbar both became progressively more disconnected, while Zhaishang grew more disconnected from 1975 through 1991-2005, then improved. Miyazaki and Nandurbar have been growing further apart in their street-network character since 1975.