Allayi in context: Street-network sprawl trends

Allayi in context

1.21.82.43<19751976–19901991–20052006–2020SNDi of street additions
1.21.82.43<19751976–19901991–20052006–2020SNDi of entire street network
AllayiAs-Sulaymaniyah (Region)Iraq (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Allayi plotted against As-Sulaymaniyah and Iraq. The SNDi of new construction in Allayi was at its lowest in 1991-2005, compared to As-Sulaymaniyah which peaked in 1976-1990 and Iraq which peaked in 1976-1990. Most recently, Allayi's incremental SNDi rose from 1.23 to 1.3 between 1991-2005 and 2006-2020. In terms of the aggregate network, Allayi ranked 1st out of 6 cities in As-Sulaymaniyah and 1st out of 86 in Iraq as of 2020.

New Street Additions (2006–2020)

SNDi value
1.3
Rank in Iraq
1st of 86
Rank in As-Sulaymaniyah
1st of 6

Entire Network (Aggregate)

SNDi value
1.45
Rank in Iraq
1st of 86
Rank in As-Sulaymaniyah
1st of 6

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

What about similarly populated cities?

12345<19751976–19901991–20052006–2020SNDi of street additions
12345<19751976–19901991–20052006–2020SNDi of entire street network
AllayiMandi DabwaliPindi Gheb

In new street additions, Allayi built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns, while Mandi Dabwali fluctuated in its street-construction patterns and Pindi Gheb built increasingly disconnected streets over time. Looking at the full network, Mandi Dabwali and Pindi Gheb both became progressively more disconnected, while Allayi became progressively more connected. Notably, Allayi had a more sprawly network than Pindi Gheb in 1975 but the two have since reversed their relative ranking.