Yaodu in context: Street-network sprawl trends

Yaodu in context

1234<19751976–19901991–20052006–2020SNDi of street additions
1234<19751976–19901991–20052006–2020SNDi of entire street network
YaoduAnhui (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Yaodu plotted against Anhui and China. The SNDi of new construction in Yaodu was at its lowest in 1976-1990, compared to Anhui which followed a zig-zag trend with an overall increase and China which followed a zig-zag trend with an overall increase. Most recently, Yaodu's incremental SNDi rose from 1.26 to 1.62 between 1991-2005 and 2006-2020. In terms of the aggregate network, Yaodu ranked 1st out of 74 cities in Anhui and 17th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
1.62
Rank in China
98th of 1843
Rank in Anhui
12th of 74

Entire Network (Aggregate)

SNDi value
1.29
Rank in China
17th of 1843
Rank in Anhui
1st of 74

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

What about similarly populated cities?

123456<19751976–19901991–20052006–2020SNDi of street additions
123456<19751976–19901991–20052006–2020SNDi of entire street network
YaoduProvidenceNamur

In new street additions, Yaodu built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns, while Providence fluctuated in its street-construction patterns and Namur built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full network, Yaodu became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards, while Providence grew more disconnected from 1975 through 1976-1990, then improved and Namur became progressively more disconnected.