Pretoria: city in Gauteng, South Africa
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 Pretoria, South Africa on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Pretoria as of 2014, the overall level of street-network sprawl is 4.16, which is highly disconnected.
Trends in street network construction: The SNDis of street construction for the respective time periods are 2.53, 5.59, 6.03 and 5.49. Street construction in Pretoria 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 Pretoria spans a total of 4355 kilometers. It is dominated by roads constructed prior to 1975. These roads have an SNDi of 2.53, which is in the 40th to 60th percentile of disconnectedness.
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 2.53, 3.85, 4.05 and 4.16. Overall, the SNDi of the aggregate street network has risen: the street network in Pretoria has become more disconnected. This increase has slowed: between 1975 and 1976-1990, SNDi rose by 1.32 points, but between 1991-2000 and 2001-2014, it rose by just 0.11.
Pretoria and Gauteng do not follow the same trend in the disconnectivity of their street network constructions. The SNDi in Pretoria peaked in 1991-2000, while the SNDi of street constructions in Gauteng rose steadily.
How do development practices in Pretoria fare in comparison to others in Gauteng? Most recently in 2001-2014, street construction in Pretoria was the 6th-most disconnected out of the 19 cities in Gauteng. Its position in the ranks since 1975 has risen; relative to other cities in Gauteng, street construction in Pretoria has become more disconnected. Pretoria ranked 12th in 1975, 2nd in 1976-1990, 3rd in 1991-2000 and 6th in 2001-2014.
Pretoria and South Africa do not follow the same trend in the disconnectivity of their street network constructions. The SNDi in Pretoria peaked in 1991-2000, while the SNDi of street constructions in South Africa followed a zig-zag trend with an overall increase.
How do development practices in Pretoria fare in comparison to others in South Africa? Most recently in 2001-2014, street construction in Pretoria was the 19th-most disconnected out of the 77 cities in South Africa. Its position in the ranks since 1975 has risen; relative to other cities in South Africa, street construction in Pretoria has become more disconnected. Pretoria ranked 31st in 1975, 4th in 1976-1990, 11th in 1991-2000 and 19th in 2001-2014.
Pretoria and Gauteng follow the same trend in the disconnectivity of their aggregate street networks. The SNDi for both of these rose steadily.
To date, Pretoria is the 4th-most disconnected out of the 19 cities in Gauteng. Its position in the ranks since 1975 has risen; relative to other cities in Gauteng, the street network in Pretoria has become more disconnected. Pretoria ranked 12th in 1975, 6th in 1976-1990, 5th in 1991-2000 and 4th in 2001-2014.
Pretoria and South Africa follow the same trend in the disconnectivity of their aggregate street networks. The SNDi for both of these rose steadily.
To date, Pretoria is the 16th-most disconnected out of the 77 cities in South Africa. Its position in the ranks since 1975 has risen; relative to other cities in South Africa, the street network in Pretoria has become more disconnected. Pretoria ranked 31st in 1975, 21st in 1976-1990, 17th in 1991-2000 and 16th in 2001-2014.
As of 2015, Pretoria had a built-up area of 216.52 square kilometers, and a population of 1473571 people.
These are some other cities with approximately the same population: