Van: region in Turkey
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 Van, Turkey on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Van as of 2014, the overall level of street-network sprawl is 4.82, which is highly disconnected.
Trends in street network construction: The SNDis of street construction for the respective time periods are 4.55, 4.42, 5.15 and 6.2. The disconnectivity of new streets constructed in Van fell, then rose. In 1976-1990, new street layouts were the most connected.
Quantity of street network construction: The street network in Van spans a total of 4860 kilometers. The period with the greatest volume of street construction was 1975. These roads have an SNDi of 4.55, 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 4.55, 4.5, 4.6 and 4.82. The SNDi of the aggregate street network in fell at first, but Van has worsened in disconnectivity since 1990.
The level of street-network sprawl in new development in Van was at its lowest in 1976-1990. To get a sense of how street development has changed in Van, we can consider two of its most populous cities: Van and Erciş. Out of the two cities, Erciş does not follow the same trend as the region. The level of street-network sprawl in new development in Erciş followed a zig-zag trend.
How do development practices in Van fare in comparison to others in Turkey? Most recently in 2001-2014, street construction in Van was the 3rd-most disconnected out of the 71 regions in Turkey. Its position in the ranks since 1975 has risen; relative to other regions in Turkey, street construction in Van has become more disconnected. Van ranked 6th in 1975, 2nd in 1976-1990, 9th in 1991-2000 and 3rd in 2001-2014.
As of 2014, the city with the most disconnected street network in Van is Erciş with an SNDi of 4.89, which is highly disconnected. Conversely, the most connected city is Van with an SNDi of 2.71, which is in the 40th to 60th percentile of disconnectedness. See trends for these cities: Van, Erciş
The level of street-network sprawl in the aggregate network in Van was at its lowest in 1976-1990. To get a sense of how the aggregate street network has changed in Van, we can consider two of its most populous cities: Van and Erciş. Out of the two cities, Erciş does not follow the same trend as the region. The level of street-network sprawl in the aggregate network in Erciş was at its lowest in 1976-1990.
To date, Van is the 3rd-most disconnected out of the 71 regions in Turkey. Its position in the ranks since 1975 has risen; relative to other regions in Turkey, the street network in Van has become more disconnected. Van ranked 6th in 1975, 3rd in 1976-1990, 4th in 1991-2000 and 3rd in 2001-2014.