Tinglin in context: Street-network sprawl trends

Tinglin 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
TinglinShanghai (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Tinglin plotted against Shanghai and China. The SNDi of new construction in Tinglin peaked in 1991-2005, compared to Shanghai which followed a zig-zag trend with an overall increase and China which followed a zig-zag trend with an overall increase. Most recently, Tinglin's incremental SNDi fell from 3.25 to 3.22 between 1991-2005 and 2006-2020. In terms of the aggregate network, Tinglin ranked 4th out of 11 cities in Shanghai and 1082nd out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
3.22
Rank in China
1014th of 1843
Rank in Shanghai
4th of 11

Entire Network (Aggregate)

SNDi value
3.07
Rank in China
1082nd of 1843
Rank in Shanghai
4th of 11

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

What about similarly populated cities?

2468<19751976–19901991–20052006–2020SNDi of street additions
2468<19751976–19901991–20052006–2020SNDi of entire street network
TinglinWamazaBani Hallah

In new street additions, Tinglin built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Wamaza fluctuated in its street-construction patterns and Banī Ḩallah built increasingly disconnected streets over time. For the full network, Tinglin and Banī Ḩallah both became progressively more disconnected, while Wamaza became progressively more connected. Notably, Tinglin had a more connected network than Wamaza in 1975 but the two have since reversed their relative ranking.