Tonghua in context: Street-network sprawl trends

Tonghua in context

33.64.24.8<19751976–19901991–20052006–2020SNDi of street additions
33.64.24.8<19751976–19901991–20052006–2020SNDi of entire street network
TonghuaJilin (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Tonghua plotted against Jilin and China. The SNDi of new construction in Tonghua peaked in 1976-1990, compared to Jilin which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Tonghua's incremental SNDi fell from 3.84 to 2.9 between 1991-2005 and 2006-2020.

New Street Additions (2006–2020)

SNDi value
2.9

Entire Network (Aggregate)

SNDi value
3.13

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

What about similarly populated cities?

23456<19751976–19901991–20052006–2020SNDi of street additions
23456<19751976–19901991–20052006–2020SNDi of entire street network
TonghuaRangkasbitungSimferopol

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