Red Sea: region in 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 Red Sea, Sudan on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Red Sea as of 2014, the overall level of street-network sprawl is 3.51, which is highly disconnected.
Trends in street network construction: The SNDis of street construction for the respective time periods are 1.66, 3.27, 5.56 and 1.42. Street construction in Red Sea 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 Red Sea spans a total of 2103 kilometers. It is dominated by roads constructed in 1991-2000. These roads have an SNDi of 5.56, 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 1.66, 2.63, 3.98 and 3.51. The aggregate street network in Red Sea increased in disconnectivity initially,but the trend has turned around after 2000.
The level of street-network sprawl in new development in Red Sea peaked in 1991-2000. To get a sense of how street development has changed in Red Sea, we can consider three of its most populous cities: Port Sudan, Hayya and Sinkāt. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in new development in Port Sudan peaked in 1976-1990. The level of street-network sprawl in new development in Hayya followed a zig-zag trend. The level of street-network sprawl in new development in Sinkāt followed a zig-zag trend.
How do development practices in Red Sea fare in comparison to others in Sudan? Most recently in 2001-2014, street construction in Red Sea was the 13th-most disconnected out of the 17 regions in Sudan. Its position in the ranks since 1975 has fallen; relative to other regions in Sudan, street construction in Red Sea has become more connected. Red Sea ranked 7th in 1975, 2nd in 1976-1990, 1st in 1991-2000 and 13th in 2001-2014.
As of 2014, the city with the most disconnected street network in Red Sea is Sawakin with an SNDi of 4.41, which is highly disconnected. Conversely, the most connected city is Hayya with an SNDi of 0.26, which is very well-connected. See trends for these cities: Hayya, Sawakin
The level of street-network sprawl in the aggregate network in Red Sea peaked in 1991-2000. To get a sense of how the aggregate street network has changed in Red Sea, we can consider three of its most populous cities: Port Sudan, Hayya and Sinkāt. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in the aggregate network in Port Sudan peaked in 1976-1990. The level of street-network sprawl in the aggregate network in Hayya followed a zig-zag trend. The level of street-network sprawl in the aggregate network in Sinkāt followed a zig-zag trend.
To date, Red Sea is the 2nd-most disconnected out of the 17 regions in Sudan. Its position in the ranks since 1975 has risen; relative to other regions in Sudan, the street network in Red Sea has become more disconnected. Red Sea ranked 7th in 1975, 4th in 1976-1990, 2nd in 1991-2000 and 2nd in 2001-2014.