Luoyang in context: Street-network sprawl trends

Luoyang 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
LuoyangHenan (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Luoyang plotted against Henan and China. The SNDi of new construction in Luoyang 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, Luoyang's incremental SNDi fell from 2.62 to 2.42 between 1991-2005 and 2006-2020. In terms of the aggregate network, Luoyang ranked 62nd out of 129 cities in Henan and 491st out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.42
Rank in China
465th of 1843
Rank in Henan
63rd of 129

Entire Network (Aggregate)

SNDi value
2.37
Rank in China
491st of 1843
Rank in Henan
62nd 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
LuoyangJamshedpurNashik

In new street additions, Luoyang built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Jamshedpur fluctuated in its street-construction patterns and Nashik built increasingly disconnected streets over time. For the full street network, though, all three cities follow the same trend. Luoyang and Nashik have been growing further apart in their street-network character since 1975.