Siyahgird in context: Street-network sprawl trends

Siyahgird in context

36912<19751976–19901991–20052006–2020SNDi of street additions
36912<19751976–19901991–20052006–2020SNDi of entire street network
SiyahgirdParwan (Region)Afghanistan (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Siyahgird plotted against Parwan and Afghanistan. The SNDi of new construction in Siyahgird followed a zig-zag trend with an overall increase, compared to Parwan which fell steadily and Afghanistan which followed a zig-zag trend with an overall increase. In terms of the aggregate network, Siyahgird ranked 3rd out of 4 cities in Parwan and 68th out of 73 in Afghanistan as of 2020.

New Street Additions (2006–2020)

SNDi value
13.62
Rank in Afghanistan
70th of 73
Rank in Parwan
4th of 4

Entire Network (Aggregate)

SNDi value
6.9
Rank in Afghanistan
68th of 73
Rank in Parwan
3rd of 4

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

What about similarly populated cities?

04812<19751976–19901991–20052006–2020SNDi of street additions
04812<19751976–19901991–20052006–2020SNDi of entire street network
SiyahgirdDamo New VillagePattan

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