Kermanshah: region in Iran
What exactly constitutes the spatial extent of the city? For these aggregations, we used the Global Human Settlement Layer Urban Center Database (GHS-UCDB) to define the boundaries of the city. These cities -- or urban centers -- cover areas that are densely populated and built-up, and so may extend beyond the spatial borders of these cities that we may be familiar with. The GHS area is shaded in blue.
View Kermanshah, Iran on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Kermanshah as of 2014, the overall level of street-network sprawl is 3.43, which is highly disconnected.
Trends in street network construction: The SNDis of street construction for the respective time periods are 3.22, 2.48, 3.42 and 5.0. The disconnectivity of new streets constructed in Kermanshah fell, then rose. In 1976-1990, new street layouts were the most connected.
Quantity of street network construction: The street network in Kermanshah spans a total of 8362 kilometers. It is dominated by roads constructed in 2001-2014. These roads have an SNDi of 5.0, which is highly disconnected.
Effect on the aggregate network: New construction in each period adds to the total stock of streets, but does not change streets that have already been built. Therefore, it has a limited effect on the street network as a whole. The SNDis of the aggregate street network in the respective time periods are 3.22, 2.59, 2.78 and 3.43. The SNDi of the aggregate street network in fell at first, but Kermanshah has worsened in disconnectivity since 1990.
The level of street-network sprawl in new development in Kermanshah was at its lowest in 1976-1990. To get a sense of how street development has changed in Kermanshah, we can consider three of its most populous cities: Kermanshah, Eslamabad-e Gharb and Javanrud. Out of the three cities, Eslamabad-e Gharb and Javanrud do not follow the same trend as the region. The level of street-network sprawl in new development in Eslamabad-e Gharb rose steadily. The level of street-network sprawl in new development in Javanrud followed a zig-zag trend.
How do development practices in Kermanshah fare in comparison to others in Iran? Most recently in 2001-2014, street construction in Kermanshah was the 4th-most disconnected out of the 31 regions in Iran. Its position in the ranks since 1975 has risen; relative to other regions in Iran, street construction in Kermanshah has become more disconnected. Kermanshah ranked 21st in 1975, 15th in 1976-1990, 15th in 1991-2000 and 4th in 2001-2014.
As of 2014, the city with the most disconnected street network in Kermanshah is Eslamabad-e Gharb with an SNDi of 4.01, which is highly disconnected. Conversely, the most connected city is Sarpol-e Zahab with an SNDi of 1.51, which is relatively well-connected. See trends for these cities: Sarpol-e Zahab, Eslamabad-e Gharb
The level of street-network sprawl in the aggregate network in Kermanshah was at its lowest in 1976-1990. To get a sense of how the aggregate street network has changed in Kermanshah, we can consider three of its most populous cities: Kermanshah, Eslamabad-e Gharb and Javanrud. Out of the three cities, Eslamabad-e Gharb and Javanrud do not follow the same trend as the region. The level of street-network sprawl in the aggregate network in Eslamabad-e Gharb rose steadily. The level of street-network sprawl in the aggregate network in Javanrud followed a zig-zag trend.
To date, Kermanshah is the 14th-most disconnected out of the 31 regions in Iran. Its position in the ranks since 1975 has risen; relative to other regions in Iran, the street network in Kermanshah has become more disconnected. Kermanshah ranked 21st in 1975, 20th in 1976-1990, 19th in 1991-2000 and 14th in 2001-2014.