Longgang in context: Street-network sprawl trends

Longgang 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
LonggangShandong (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Longgang plotted against Shandong and China. The SNDi of new construction in Longgang rose steadily, compared to Shandong which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Longgang's incremental SNDi rose from 2.98 to 3.85 between 1991-2005 and 2006-2020. In terms of the aggregate network, Longgang ranked 78th out of 124 cities in Shandong and 781st out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
3.85
Rank in China
1331st of 1843
Rank in Shandong
105th of 124

Entire Network (Aggregate)

SNDi value
2.73
Rank in China
781st of 1843
Rank in Shandong
78th of 124

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

What about similarly populated cities?

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
LonggangAradErcis

In new street additions, Longgang and Arad both built increasingly disconnected streets over time, while Erciş fluctuated in its street-construction patterns. For the full street network, though, all three cities follow the same trend. Longgang and Arad have been growing further apart in their street-network character since 1975.