Al Bayda': region in Yemen
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 Al Bayda', Yemen on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Al Bayda' as of 2014, the overall level of street-network sprawl is 5.31, which is highly disconnected.
Trends in street network construction: The SNDis of street construction for the respective time periods are nan, nan, 8.2 and 5.18. Data was not available in 1975 and 1976-1990.
Quantity of street network construction: The street network in Al Bayda' spans a total of 1444 kilometers. It is dominated by roads constructed in 2001-2014. These roads have an SNDi of 5.18, 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 nan, nan, 8.23 and 5.31. Data was not available in 1975 and 1976-1990.
The level of street-network sprawl in new development in Al Bayda' followed a zig-zag trend. To get a sense of how street development has changed in Al Bayda', we can consider two of its most populous cities: Al Beidha and Rada'a. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in new development in Al Beidha followed a zig-zag trend. The level of street-network sprawl in new development in Rada'a followed a zig-zag trend.
How do development practices in Al Bayda' fare in comparison to others in Yemen? Most recently in 2001-2014, street construction in Al Bayda' was the 5th-most disconnected out of the 16 regions in Yemen. Its position in the ranks since 1975 has fallen; relative to other regions in Yemen, street construction in Al Bayda' has become more connected. Al Bayda' ranked 4th in 1991-2000 and 5th in 2001-2014. There was no ranking in 1975 and 1976-1990 due to unavailable data.
As of 2014, the city with the most disconnected street network in Al Bayda' is Al Beidha with an SNDi of 3.58, which is highly disconnected. Conversely, the most connected city is Rada'a with an SNDi of 0.5, which is relatively well-connected. See trends for these cities: Rada'a, Al Beidha
The level of street-network sprawl in the aggregate network in Al Bayda' followed a zig-zag trend. To get a sense of how the aggregate street network has changed in Al Bayda', we can consider two of its most populous cities: Al Beidha and Rada'a. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in the aggregate network in Al Beidha followed a zig-zag trend. The level of street-network sprawl in the aggregate network in Rada'a followed a zig-zag trend.
To date, Al Bayda' is the 6th-most disconnected out of the 16 regions in Yemen. Its position in the ranks since 1975 has fallen; relative to other regions in Yemen, the street network in Al Bayda' has become more connected. Al Bayda' ranked 3rd in 1991-2000 and 6th in 2001-2014. There was no ranking in 1975 and 1976-1990 due to unavailable data.