Yangzhou 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 Yangzhou plotted against Jiangsu and China. The SNDi of new construction in Yangzhou peaked in 1991-2005, compared to Jiangsu which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Yangzhou's incremental SNDi fell from 3.07 to 3.05 between 1991-2005 and 2006-2020. In terms of the aggregate network, Yangzhou ranked 55th out of 101 cities in Jiangsu and 930th 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?

• Dagupan [Lingayen], Philippines
• Luohe, China
• Changshu, China
• Aguascalientes, México
• Bucaramanga, Colombia
• Lubango, Angola

While Dagupan [Lingayen] and Aguascalientes both built increasingly disconnected streets over time, Yangzhou built increasingly disconnected streets from 1975 through 1991-2005, then improved in new street additions. For the full street network, though, all three cities follow the same trend. Yangzhou and Dagupan [Lingayen] have been growing further apart in their street-network character since 1975.