Context
The chart above shows the evolution of street network disconnectedness of the most connected and most disconnected cities in Turkey, for both new street additions (left) and the aggregate street network (right).
Turkey in context: Street-network sprawl of new development
The level of street-network sprawl in new development in Turkey followed a zig-zag trend with an overall increase. To get a sense of how street development has changed in Turkey, we can consider three of its most populous regions: Istanbul, Ankara and Izmir. Disconnectivity in the most populous cities in Turkey follow the same country trend.
How do development practices in Turkey fare in comparison to others in the world? Most recently in 2006-2020, street construction in Turkey was the 10th-most disconnected out of the 179 countries in the world. Its position in the ranks since 1975 has risen; relative to other countries in the world, street construction in Turkey has become more disconnected. Turkey ranked 24th in 1975, 25th in 1976-1990, 18th in 1991-2005 and 10th in 2006-2020.
The largest city in Turkey is Istanbul, with a population of 13832700 people. Taking into account the entire (i.e. aggregate) street network in Istanbul as of 2020, the overall level of street-network sprawl is 2.15, which is well-connected. The level of street-network sprawl in new development in Istanbul followed a zig-zag trend with an overall increase.
Turkey in context: Aggregate street-network sprawl
As of 2020, the city with the most disconnected street network in Turkey is Zonguldak with an SNDi of 5.53, which is very sprawly. Conversely, the most connected city is Bandırma with an SNDi of 0.97, which is very well-connected. See these two cities’ trends in the above graph, or dive deeper into each: Bandırma, Zonguldak.
The level of street-network sprawl in the aggregate network in Turkey rose steadily. To get a sense of how the aggregate street network has changed in Turkey, we can consider three of its most populous regions: Istanbul, Ankara and Izmir. Disconnectivity in the most populous cities in Turkey follow the same country trend.
To date, Turkey is the 21st-most disconnected out of the 179 countries in the world. Its position in the ranks since 1975 has risen; relative to other countries in the world, the street network in Turkey has become more disconnected. Turkey ranked 24th in 1975, 19th in 1976-1990, 21st in 1991-2005 and 21st in 2006-2020.
The largest city in Turkey is Istanbul, with a population of 13832700 people. Taking into account the entire (i.e. aggregate) street network in Istanbul as of 2020, the overall level of street-network sprawl is 2.15, which is well-connected. The level of street-network sprawl in the aggregate network in Istanbul rose steadily.