Yitong in context: Street-network sprawl trends

Yitong in context

234567<19751976–19901991–20052006–2020SNDi of street additions
234567<19751976–19901991–20052006–2020SNDi of entire street network
YitongJilin (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Yitong plotted against Jilin and China. The SNDi of new construction in Yitong peaked in 1991-2005, compared to Jilin which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Yitong's incremental SNDi fell from 6.67 to 5.63 between 1991-2005 and 2006-2020. In terms of the aggregate network, Yitong ranked 41st out of 47 cities in Jilin and 1476th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
5.63
Rank in China
1717th of 1843
Rank in Jilin
41st of 47

Entire Network (Aggregate)

SNDi value
3.73
Rank in China
1476th of 1843
Rank in Jilin
41st of 47

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

What about similarly populated cities?

246<19751976–19901991–20052006–2020SNDi of street additions
246<19751976–19901991–20052006–2020SNDi of entire street network
YitongKhairSanchahe

In new street additions, Yitong built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Khair fluctuated in its street-construction patterns and Sanchahe fluctuated in its street-construction patterns. For the full network, Yitong became progressively more disconnected, while Khair fluctuated in connectivity and Sanchahe fluctuated in connectivity. Yitong and Khair have been growing further apart in their street-network character since 1975.