Huantai in context: Street-network sprawl trends

Huantai in context

1234<19751976–19901991–20052006–2020SNDi of street additions
1234<19751976–19901991–20052006–2020SNDi of entire street network
HuantaiShandong (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Huantai plotted against Shandong and China. The SNDi of new construction in Huantai rose steadily, compared to Shandong which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Huantai's incremental SNDi rose from 1.46 to 2.53 between 1991-2005 and 2006-2020. In terms of the aggregate network, Huantai ranked 46th out of 124 cities in Shandong and 262nd out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.53
Rank in China
535th of 1843
Rank in Shandong
57th of 124

Entire Network (Aggregate)

SNDi value
2.07
Rank in China
262nd of 1843
Rank in Shandong
46th of 124

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

What about similarly populated cities?

123456<19751976–19901991–20052006–2020SNDi of street additions
123456<19751976–19901991–20052006–2020SNDi of entire street network
HuantaiLankaranPingding County

In new street additions, Huantai built increasingly disconnected streets over time, while Lankaran built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns and Pingding County fluctuated in its street-construction patterns. For the full network, Huantai and Pingding County both became progressively more disconnected, while Lankaran became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards.