Xinyi 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 Xinyi plotted against Guangdong and China. The SNDi of new construction in Xinyi was at its lowest in 1991-2005, compared to Guangdong which followed a zig-zag trend with an overall increase and China which followed a zig-zag trend with an overall increase. Most recently, Xinyi's incremental SNDi rose from 1.96 to 3.4 between 1991-2005 and 2006-2020. In terms of the aggregate network, Xinyi ranked 11th out of 133 cities in Guangdong as of 2020.

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

What about similarly populated cities?

• Koforidua, Ghana
• Myaung Mya, Myanmar
• Surak, Iran
• Thái Bình, Vietnam
• Baghua, India
• Bongaigaon, India

In new street additions, Xinyi built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns, while Koforidua built increasingly disconnected streets over time and Thái Bình built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full network, Xinyi became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards, while Koforidua became progressively more disconnected and Thái Bình grew more disconnected from 1975 through 1991-2005, then improved. Xinyi and Koforidua have been growing further apart in their street-network character since 1975.