The level of street-network sprawl in new development in Arbil followed a zig-zag trend with an overall increase. To get a sense of how street development has changed in Arbil, we can consider three of its most populous cities: Erbil, Soran and koya. Out of the three cities, Soran and koya do not follow the same trend as the region. The level of street-network sprawl in new development in Soran peaked in 1976-1990. The level of street-network sprawl in new development in koya was at its lowest in 1976-1990.

As of 2020, the city with the most disconnected street network in Arbil is Soran with an SNDi of 2.87, which is moderately connected. Conversely, the most connected city is koya with an SNDi of 2.21, which is well-connected. See trends for these cities: koya, Soran

The level of street-network sprawl in the aggregate network in Arbil rose steadily. To get a sense of how the aggregate street network has changed in Arbil, we can consider three of its most populous cities: Erbil, Soran and koya. Out of the three cities, Soran and koya do not follow the same trend as the region. The level of street-network sprawl in the aggregate network in Soran peaked in 1976-1990. The level of street-network sprawl in the aggregate network in koya was at its lowest in 1976-1990.