Dayao in context: Street-network sprawl trends

Dayao in context

1.82.73.64.5<19751976–19901991–20052006–2020SNDi of street additions
1.82.73.64.5<19751976–19901991–20052006–2020SNDi of entire street network
DayaoYunnan (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Dayao plotted against Yunnan and China. The SNDi of new construction in Dayao peaked in 1976-1990, compared to Yunnan which followed a zig-zag trend with an overall increase and China which followed a zig-zag trend with an overall increase. Most recently, Dayao's incremental SNDi fell from 2.74 to 2.0 between 1991-2005 and 2006-2020. In terms of the aggregate network, Dayao ranked 12th out of 78 cities in Yunnan and 408th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
2.0
Rank in China
247th of 1843
Rank in Yunnan
9th of 78

Entire Network (Aggregate)

SNDi value
2.26
Rank in China
408th of 1843
Rank in Yunnan
12th of 78

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

What about similarly populated cities?

2468<19751976–19901991–20052006–2020SNDi of street additions
2468<19751976–19901991–20052006–2020SNDi of entire street network
DayaoPakhtaobodBanjarsari

While Pakhtaobod and Banjarsari both built increasingly disconnected streets over time, Dayao built increasingly disconnected streets from 1975 through 1976-1990, then improved in new street additions. Looking at the full network, Pakhtaobod and Banjarsari both became progressively more disconnected, while Dayao grew more disconnected from 1975 through 1991-2005, then improved. Dayao and Banjarsari have been growing further apart in their street-network character since 1975.