Sudan
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 Sudan on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Sudan as of 2014, the overall level of street-network sprawl is 1.53, which is relatively well-connected.
Trends in street network construction: The SNDis of street construction for the respective time periods are 0.61, 1.22, 2.16 and 1.94. Street construction in Sudan increased in disconnectivity initially but has since improved. The streets constructed in 1991-2000 were the most disconnected.
Quantity of street network construction: The street network in Sudan spans a total of 56127 kilometers. It is dominated by roads constructed in 2001-2014. These roads have an SNDi of 1.94, which is relatively well-connected.
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 0.61, 0.94, 1.17 and 1.53. Overall, the SNDi of the aggregate street network has risen: the street network in Sudan has become more disconnected.
The level of street-network sprawl in new development in Sudan peaked in 1991-2000. To get a sense of how street development has changed in Sudan, we can consider three of its most populous regions: Khartoum, South Darfur and Al Jazirah. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in new development in Khartoum was at its lowest in 1976-1990. The level of street-network sprawl in new development in South Darfur followed a zig-zag trend with an overall decrease. The level of street-network sprawl in new development in Al Jazirah was at its lowest in 1976-1990.
How do development practices in Sudan fare in comparison to others in the world? Most recently in 2001-2014, street construction in Sudan was the 153rd-most disconnected out of the 155 countries in the world. Its position in the ranks since 1975 has fallen; relative to other countries in the world, street construction in Sudan has become more connected. Sudan ranked 152nd in 1975, 145th in 1976-1990, 143rd in 1991-2000 and 153rd in 2001-2014.
The largest city in Sudan is Khartoum, with a population of 5824700 people. Taking into account the entire (i.e. aggregate) street network in Khartoum as of 2014, the overall level of street-network sprawl is 0.43, which is very well-connected. The level of street-network sprawl in new development in Khartoum was at its lowest in 1976-1990.
As of 2014, the city with the most disconnected street network in Sudan is Abu Zabad with an SNDi of 5.28, which is highly disconnected. Conversely, the most connected city is Um Danga with an SNDi of -1.79, which is very well-connected. See trends for these cities: Um Danga, Abu Zabad
The level of street-network sprawl in the aggregate network in Sudan rose steadily. To get a sense of how the aggregate street network has changed in Sudan, we can consider three of its most populous regions: Khartoum, South Darfur and Al Jazirah. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in the aggregate network in Khartoum was at its lowest in 1976-1990. The level of street-network sprawl in the aggregate network in South Darfur followed a zig-zag trend with an overall decrease. The level of street-network sprawl in the aggregate network in Al Jazirah was at its lowest in 1976-1990.
To date, Sudan is the 148th-most disconnected out of the 155 countries in the world. Its position in the ranks since 1975 has risen; relative to other countries in the world, the street network in Sudan has become more disconnected. Sudan ranked 152nd in 1975, 153rd in 1976-1990, 153rd in 1991-2000 and 148th in 2001-2014.
The largest city in Sudan is Khartoum, with a population of 5824700 people. Taking into account the entire (i.e. aggregate) street network in Khartoum as of 2014, the overall level of street-network sprawl is 0.43, which is very well-connected. The level of street-network sprawl in the aggregate network in Khartoum was at its lowest in 1976-1990.