Tang 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 Tang plotted against Hebei and China. The SNDi of new construction in Tang peaked in 1991-2005, compared to Hebei which followed a zig-zag trend with an overall increase and China which followed a zig-zag trend with an overall increase. Most recently, Tang's incremental SNDi fell from 2.11 to 1.18 between 1991-2005 and 2006-2020. In terms of the aggregate network, Tang ranked 1st out of 120 cities in Hebei and 72nd 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?

• Dharmanagar, India
• Reutlingen, Germany
• Fall River, United States
• Jubang, Indonesia
• Mekane Selam, Ethiopia
• Paguyangan, Indonesia

In new street additions, Tang built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Dharmanagar fluctuated in its street-construction patterns and Jubang fluctuated in its street-construction patterns. For the full network, Tang grew more disconnected from 1975 through 1991-2005, then improved, while Dharmanagar became progressively more disconnected and Jubang became progressively more disconnected. Tang and Dharmanagar have been growing further apart in their street-network character since 1975.