Yangxin 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 Yangxin plotted against Hubei and China. The SNDi of new construction in Yangxin was at its lowest in 1991-2005, compared to Hubei which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Yangxin's incremental SNDi rose from 1.37 to 2.31 between 1991-2005 and 2006-2020. In terms of the aggregate network, Yangxin ranked 7th out of 77 cities in Hubei and 191st 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?

• Guanyun, China
• Bhurkunda, India
• Jiexi, China
• Xiangshui, China
• Chunian, Pakistan
• Allahabad, Pakistan

While Guanyun and Xiangshui both built increasingly disconnected streets from 1975 through 1976-1990, then improved, Yangxin built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns in new street additions. For the full network, Yangxin became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards, while Guanyun grew more disconnected from 1975 through 1976-1990, then improved and Xiangshui became progressively more disconnected. Yangxin and Xiangshui have been converging in their street-network character since 1975.