Huaibin 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 Huaibin plotted against Henan and China. The SNDi of new construction in Huaibin was at its lowest in 1991-2005, compared to Henan which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Huaibin's incremental SNDi rose from 1.64 to 1.68 between 1991-2005 and 2006-2020. In terms of the aggregate network, Huaibin ranked 37th out of 129 cities in Henan and 232nd 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?

• Palitana, India
• Langwarrin, Australia
• Xincai, China
• Abu `Arish, Saudi Arabia
• Santana, Brazil
• Huinan, China

In new street additions, Huaibin built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns, while Palitana built increasingly disconnected streets over time and Abu `Arish built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns. For the full network, Huaibin became progressively more connected, while Palitana became progressively more disconnected and Abu `Arish became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards. Notably, Huaibin had a more sprawly network than Palitana in 1975 but the two have since reversed their relative ranking.