Dayu in context: Street-network sprawl trends

Dayu 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
DayuJiangxi (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Dayu plotted against Jiangxi and China. The SNDi of new construction in Dayu rose steadily, compared to Jiangxi which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Dayu's incremental SNDi rose from 3.64 to 3.98 between 1991-2005 and 2006-2020. In terms of the aggregate network, Dayu ranked 65th out of 82 cities in Jiangxi and 1240th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
3.98
Rank in China
1393rd of 1843
Rank in Jiangxi
74th of 82

Entire Network (Aggregate)

SNDi value
3.29
Rank in China
1240th of 1843
Rank in Jiangxi
65th of 82

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

What about similarly populated cities?

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
DayuRayachotiChester-le-Street

In new street additions, Dayu built increasingly disconnected streets over time, while Rayachoti fluctuated in its street-construction patterns and Chester-le-Street built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full network, Dayu became progressively more disconnected, while Rayachoti fluctuated in connectivity and Chester-le-Street grew more disconnected from 1975 through 1991-2005, then improved. Dayu and Rayachoti have been growing further apart in their street-network character since 1975.