Yimen in context: Street-network sprawl trends

Yimen in context

2.43.244.8<19751976–19901991–20052006–2020SNDi of street additions
2.43.244.8<19751976–19901991–20052006–2020SNDi of entire street network
YimenYunnan (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Yimen plotted against Yunnan and China. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Yimen's incremental SNDi rose from 2.42 to 2.43 between 1991-2005 and 2006-2020. In terms of the aggregate network, Yimen ranked 16th out of 78 cities in Yunnan and 501st out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.43
Rank in China
474th of 1843
Rank in Yunnan
17th of 78

Entire Network (Aggregate)

SNDi value
2.39
Rank in China
501st of 1843
Rank in Yunnan
16th of 78

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

What about similarly populated cities?

1.82.433.6<19751976–19901991–20052006–2020SNDi of street additions
1.82.433.6<19751976–19901991–20052006–2020SNDi of entire street network
YimenStalowa WolaSan Juan de los Lagos

In new street additions, Yimen fluctuated in its street-construction patterns, while Stalowa Wola built increasingly disconnected streets from 1975 through 1991-2005, then improved and San Juan de los Lagos built increasingly disconnected streets over time. For the full network, Yimen grew more disconnected from 1975 through 1976-1990, then improved, while Stalowa Wola grew more disconnected from 1975 through 1991-2005, then improved and San Juan de los Lagos became progressively more disconnected. Notably, Yimen had a more sprawly network than San Juan de los Lagos in 1975 but the two have since reversed their relative ranking.