Langfang in context: Street-network sprawl trends

Langfang in context

33.544.5<19751976–19901991–20052006–2020SNDi of street additions
33.544.5<19751976–19901991–20052006–2020SNDi of entire street network
LangfangHebei (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Langfang plotted against Hebei and China. The SNDi of new construction in Langfang rose steadily, compared to Hebei which followed a zig-zag trend with an overall increase and China which followed a zig-zag trend with an overall increase. Most recently, Langfang's incremental SNDi rose from 3.34 to 3.75 between 1991-2005 and 2006-2020. In terms of the aggregate network, Langfang ranked 90th out of 120 cities in Hebei and 1264th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
3.75
Rank in China
1280th of 1843
Rank in Hebei
75th of 120

Entire Network (Aggregate)

SNDi value
3.32
Rank in China
1264th of 1843
Rank in Hebei
90th of 120

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

What about similarly populated cities?

1.42.12.83.5<19751976–19901991–20052006–2020SNDi of street additions
1.42.12.83.5<19751976–19901991–20052006–2020SNDi of entire street network
LangfangLeipzigKhamis Mushayt

Langfang, Leipzig, and Khamis Mushayt all built increasingly disconnected streets over time in new street construction. The same pattern holds for the full street network. Notably, Langfang had a more connected network than Khamis Mushayt in 1975 but the two have since reversed their relative ranking.