Kamyaran in context: Street-network sprawl trends

Kamyaran in context

2.42.83.23.6<19751976–19901991–20052006–2020SNDi of street additions
2.42.83.23.6<19751976–19901991–20052006–2020SNDi of entire street network
KamyaranKermanshah (Region)Iran (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Kamyaran plotted against Kermanshah and Iran. The SNDi of new construction in Kamyaran peaked in 1991-2005, compared to Kermanshah which rose steadily and Iran which rose steadily. Most recently, Kamyaran's incremental SNDi fell from 2.73 to 2.54 between 1991-2005 and 2006-2020. In terms of the aggregate network, Kamyaran ranked 1st out of 4 cities in Kermanshah and 42nd out of 169 in Iran as of 2020.

New Street Additions (2006–2020)

SNDi value
2.54
Rank in Iran
29th of 169
Rank in Kermanshah
1st of 4

Entire Network (Aggregate)

SNDi value
2.51
Rank in Iran
42nd of 169
Rank in Kermanshah
1st of 4

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

What about similarly populated cities?

2.43.244.8<19751976–19901991–20052006–2020SNDi of street additions
2.43.244.8<19751976–19901991–20052006–2020SNDi of entire street network
KamyaranChigorodoSongbei

In new street additions, Chigorodó and Songbei both fluctuated in street-construction patterns, while Kamyaran built increasingly disconnected streets from 1975 through 1991-2005, then improved. Looking at the full network, Chigorodó and Songbei both fluctuated in connectivity, while Kamyaran became progressively more disconnected. Notably, Kamyaran had a more sprawly network than Songbei in 1975, but the two have since reversed their relative ranking.