Toyama in context: Street-network sprawl trends

Toyama 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
ToyamaJapan (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Toyama plotted against Japan. Both Toyama and Japan follow the same trend. Most recently, Toyama's incremental SNDi rose from 2.23 to 2.28 between 1991-2005 and 2006-2020. In terms of the aggregate network, Toyama ranked 38th out of 135 in Japan as of 2020.

New Street Additions (2006–2020)

SNDi value
2.28
Rank in Japan
45th of 135

Entire Network (Aggregate)

SNDi value
2.0
Rank in Japan
38th of 135

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

What about similarly populated cities?

2345<19751976–19901991–20052006–2020SNDi of street additions
2345<19751976–19901991–20052006–2020SNDi of entire street network
ToyamaKhanpurGuna

While Khanpur and Guna both built increasingly disconnected streets over time, Toyama fluctuated in its street-construction patterns in new street additions. For the full street network, though, all three cities follow the same trend. Toyama and Khanpur have been growing further apart in their street-network character since 1975.