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.

How do development practices in Arbil fare in comparison to others in Iraq? Most recently in 2006-2020, street construction in Arbil was the 14th-most disconnected out of the 18 regions in Iraq. Its position in the ranks since 1975 has fallen; relative to other regions in Iraq, street construction in Arbil has become more connected. Arbil ranked 2nd in 1975, 17th in 1976-1990, 12th in 1991-2005 and 14th in 2006-2020.

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.

To date, Arbil is the 11th-most disconnected out of the 18 regions in Iraq. Its position in the ranks since 1975 has fallen; relative to other regions in Iraq, the street network in Arbil has become more connected. Arbil ranked 2nd in 1975, 5th in 1976-1990, 6th in 1991-2005 and 11th in 2006-2020.