Anyang in context: Street-network sprawl trends

Anyang in context

2.433.64.2<19751976–19901991–20052006–2020SNDi of street additions
2.433.64.2<19751976–19901991–20052006–2020SNDi of entire street network
AnyangHenan (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Anyang plotted against Henan and China. The SNDi of new construction in Anyang peaked in 1976-1990, compared to Henan which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Anyang's incremental SNDi fell from 3.36 to 3.14 between 1991-2005 and 2006-2020. In terms of the aggregate network, Anyang ranked 93rd out of 129 cities in Henan and 967th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
3.14
Rank in China
966th of 1843
Rank in Henan
96th of 129

Entire Network (Aggregate)

SNDi value
2.92
Rank in China
967th of 1843
Rank in Henan
93rd of 129

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

What about similarly populated cities?

1.82.433.6<19751976–19901991–20052006–2020SNDi of street additions
1.82.433.6<19751976–19901991–20052006–2020SNDi of entire street network
AnyangNizhny NovgorodFez

In new street additions, Anyang built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Nizhny Novgorod built increasingly disconnected streets over time and Fez fluctuated in its street-construction patterns. For the full network, Anyang and Nizhny Novgorod both became progressively more disconnected, while Fez grew more disconnected from 1975 through 1976-1990, then improved. Anyang and Fez have been growing further apart in their street-network character since 1975.