Roraima: region in Brazil
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 Roraima, Brazil on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Roraima as of 2014, the overall level of street-network sprawl is 1.57, which is relatively well-connected.
Trends in street network construction: The SNDis of street construction for the respective time periods are 1.46, nan, 2.27 and 2.3. Data was not available in 1976-1990.
Quantity of street network construction: The street network in Roraima spans a total of 4955 kilometers. It is dominated by roads constructed prior to 1975. These roads have an SNDi of 1.46, 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 1.46, 1.46, 1.5 and 1.57. Overall, the SNDi of the aggregate street network has risen: the street network in Roraima has become more disconnected.
The level of street-network sprawl in new development in Roraima followed a zig-zag trend with an overall increase. To get a sense of how street development has changed in Roraima, we can consider one of its most populous cities: Boa Vista. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in new development in Boa Vista followed a zig-zag trend with an overall increase.
How do development practices in Roraima fare in comparison to others in Brazil? Most recently in 2001-2014, street construction in Roraima was the 28th-most disconnected out of the 29 regions in Brazil. Its position in the ranks since 1975 has fallen; relative to other regions in Brazil, street construction in Roraima has become more connected. Roraima ranked 23rd in 1975, 24th in 1991-2000 and 28th in 2001-2014. There was no ranking in 1976-1990 due to unavailable data.
As of 2014, the city with the most disconnected street network in Roraima is Boa Vista with an SNDi of 0.28, which is very well-connected. Conversely, the most connected city is Boa Vista with an SNDi of 0.28, which is very well-connected. See trends for these cities: Boa Vista, Boa Vista
The level of street-network sprawl in the aggregate network in Roraima rose steadily. To get a sense of how the aggregate street network has changed in Roraima, we can consider one of its most populous cities: Boa Vista. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in the aggregate network in Boa Vista rose steadily.
To date, Roraima is the 26th-most disconnected out of the 29 regions in Brazil. Its position in the ranks since 1975 has fallen; relative to other regions in Brazil, the street network in Roraima has become more connected. Roraima ranked 23rd in 1975, 25th in 1976-1990, 26th in 1991-2000 and 26th in 2001-2014.