Tailai in context: Street-network sprawl trends

Tailai in context

2.73.64.55.4<19751976–19901991–20052006–2020SNDi of street additions
2.73.64.55.4<19751976–19901991–20052006–2020SNDi of entire street network
TailaiHeilongjiang (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Tailai plotted against Heilongjiang and China. The SNDi of new construction in Tailai rose steadily, compared to Heilongjiang which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Tailai's incremental SNDi rose from 3.72 to 5.14 between 1991-2005 and 2006-2020. In terms of the aggregate network, Tailai ranked 45th out of 67 cities in Heilongjiang and 813th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
5.14
Rank in China
1659th of 1843
Rank in Heilongjiang
63rd of 67

Entire Network (Aggregate)

SNDi value
2.76
Rank in China
813th of 1843
Rank in Heilongjiang
45th of 67

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

What about similarly populated cities?

2.73.64.55.4<19751976–19901991–20052006–2020SNDi of street additions
2.73.64.55.4<19751976–19901991–20052006–2020SNDi of entire street network
TailaiTarnowLatina

Tailai, Tarnów, and Latina all built increasingly disconnected streets over time in new street construction. The same pattern holds for the full street network. Notably, Tailai had a more connected network than Latina in 1975 but the two have since reversed their relative ranking.