Taihe in context: Street-network sprawl trends

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Taihe plotted against Anhui and China. The SNDi of new construction in Taihe was at its lowest in 1976-1990, compared to Anhui which followed a zig-zag trend with an overall increase and China which followed a zig-zag trend with an overall increase. Most recently, Taihe's incremental SNDi rose from 1.7 to 1.75 between 1991-2005 and 2006-2020. In terms of the aggregate network, Taihe ranked 15th out of 74 cities in Anhui and 208th out of 1843 in China as of 2020.

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

What about similarly populated cities?

• Abadan, Iran
• Kharupetia, India
• Tembilahan, Indonesia
• Mongbwalu, Democratic Republic of the Congo
• Mbanza-Ngungu, Democratic Republic of the Congo
• Taungoo, Myanmar

In new street additions, Taihe and Mongbwalu both built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns, while Abadan built increasingly disconnected streets over time. For the full network, Taihe became progressively more connected, while Abadan became progressively more disconnected and Mongbwalu became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards. Taihe and Abadan have been growing further apart in their street-network character since 1975.