Huludao in context: Street-network sprawl trends

Huludao in context

2.433.64.2<19751976–19901991–20052006–2020SNDi of street additions
2.433.64.2<19751976–19901991–20052006–2020SNDi of entire street network
HuludaoLiaoning (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Huludao plotted against Liaoning and China. The SNDi of new construction in Huludao was at its lowest in 1991-2005, compared to Liaoning which followed a zig-zag trend with an overall increase and China which followed a zig-zag trend with an overall increase. Most recently, Huludao's incremental SNDi rose from 2.34 to 3.46 between 1991-2005 and 2006-2020. In terms of the aggregate network, Huludao ranked 45th out of 61 cities in Liaoning and 1144th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
3.46
Rank in China
1135th of 1843
Rank in Liaoning
36th of 61

Entire Network (Aggregate)

SNDi value
3.15
Rank in China
1144th of 1843
Rank in Liaoning
45th of 61

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

What about similarly populated cities?

2.12.83.54.2<19751976–19901991–20052006–2020SNDi of street additions
2.12.83.54.2<19751976–19901991–20052006–2020SNDi of entire street network
HuludaoShaoyangLeshan

While Shaoyang and Leshan both built increasingly disconnected streets from 1975 through 1976-1990, then improved, Huludao built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns in new street additions. Looking at the full network, Shaoyang and Leshan both grew more disconnected from 1975 through 1976-1990, then improved, while Huludao became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards. Notably, Huludao had a more sprawly network than Shaoyang in 1975 but the two have since reversed their relative ranking.