Neihuang in context: Street-network sprawl trends

Neihuang in context

2.12.83.54.2<19751976–19901991–20052006–2020SNDi of street additions
2.12.83.54.2<19751976–19901991–20052006–2020SNDi of entire street network
NeihuangHenan (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Neihuang plotted against Henan and China. The SNDi of new construction in Neihuang 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, Neihuang's incremental SNDi fell from 3.29 to 2.81 between 1991-2005 and 2006-2020. In terms of the aggregate network, Neihuang ranked 83rd out of 129 cities in Henan and 823rd out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.81
Rank in China
746th of 1843
Rank in Henan
84th of 129

Entire Network (Aggregate)

SNDi value
2.77
Rank in China
823rd of 1843
Rank in Henan
83rd of 129

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
NeihuangXinjinJaswantnagar

In new street additions, Neihuang built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Xinjin built increasingly disconnected streets over time and Jaswantnagar built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns. For the full network, Neihuang and Xinjin both became progressively more disconnected, while Jaswantnagar became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards. Notably, Neihuang had a more sprawly network than Xinjin in 1975 but the two have since reversed their relative ranking.