Luyi in context: Street-network sprawl trends

Luyi in context

1.82.73.64.5<19751976–19901991–20052006–2020SNDi of street additions
1.82.73.64.5<19751976–19901991–20052006–2020SNDi of entire street network
LuyiHenan (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Luyi plotted against Henan and China. The SNDi of new construction in Luyi followed a zig-zag trend with an overall increase, compared to Henan which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Luyi's incremental SNDi fell from 2.64 to 2.29 between 1991-2005 and 2006-2020. In terms of the aggregate network, Luyi ranked 53rd out of 129 cities in Henan and 398th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.29
Rank in China
391st of 1843
Rank in Henan
55th of 129

Entire Network (Aggregate)

SNDi value
2.26
Rank in China
398th of 1843
Rank in Henan
53rd 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
LuyiBaniWuzhi

In new street additions, Luyi fluctuated in its street-construction patterns, while Baní fluctuated in its street-construction patterns and Wuzhi built increasingly disconnected streets from 1975 through 1991-2005, then improved. Looking at the full network, Baní and Wuzhi both became progressively more disconnected, while Luyi became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards. Notably, Luyi had a more sprawly network than Baní in 1975 but the two have since reversed their relative ranking.