Takaoka in context: Street-network sprawl trends

Takaoka in context

1.82.12.42.7<19751976–19901991–20052006–2020SNDi of street additions
1.82.12.42.7<19751976–19901991–20052006–2020SNDi of entire street network
TakaokaToyama (Region)Japan (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Takaoka plotted against Toyama and Japan. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Takaoka's incremental SNDi rose from 2.06 to 2.13 between 1991-2005 and 2006-2020. In terms of the aggregate network, Takaoka ranked 1st out of 2 cities in Toyama and 32nd out of 135 in Japan as of 2020.

New Street Additions (2006–2020)

SNDi value
2.13
Rank in Japan
33rd of 135
Rank in Toyama
1st of 2

Entire Network (Aggregate)

SNDi value
1.9
Rank in Japan
32nd of 135
Rank in Toyama
1st of 2

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

What about similarly populated cities?

1.82.73.64.5<19751976–19901991–20052006–2020SNDi of street additions
1.82.73.64.5<19751976–19901991–20052006–2020SNDi of entire street network
TakaokaSuncheon-siYingcheng

In new street additions, Takaoka and Suncheon-si both fluctuated in its street-construction patterns, while Yingcheng built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full network, Takaoka and Suncheon-si both became progressively more disconnected, while Yingcheng grew more disconnected from 1975 through 1991-2005, then improved. Takaoka and Suncheon-si have been converging in their street-network character since 1975.