Haylan in context: Street-network sprawl trends

Haylan in context

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
HaylanAleppo (Region)Syria (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Haylan plotted against Aleppo and Syria. The SNDi of new construction in Haylan fell steadily, compared to Aleppo which followed a zig-zag trend with an overall increase and Syria which followed a zig-zag trend with an overall increase. Most recently, Haylan's incremental SNDi fell from 4.42 to 2.69 between 1991-2005 and 2006-2020. In terms of the aggregate network, Haylan ranked 7th out of 7 cities in Aleppo and 37th out of 39 in Syria as of 2020.

New Street Additions (2006–2020)

SNDi value
2.69
Rank in Syria
14th of 39
Rank in Aleppo
4th of 7

Entire Network (Aggregate)

SNDi value
3.31
Rank in Syria
37th of 39
Rank in Aleppo
7th of 7

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

What about similarly populated cities?

1234<19751976–19901991–20052006–2020SNDi of street additions
1234<19751976–19901991–20052006–2020SNDi of entire street network
HaylanAndataboSakania

In new street additions, Haylan built increasingly connected streets over time, while Andatabo fluctuated in its street-construction patterns and Sakania fluctuated in its street-construction patterns. For the full network, Haylan became progressively more connected, while Andatabo became progressively more connected and Sakania became progressively more disconnected. Notably, Haylan had a more sprawly network than Andatabo in 1975 but the two have since reversed their relative ranking.