Gölbaşı in context: Street-network sprawl trends

Golbasi in context

2.12.42.7<19751976–19901991–20052006–2020SNDi of street additions
2.12.42.7<19751976–19901991–20052006–2020SNDi of entire street network
GolbasiAnkara (Region)Turkey (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Gölbaşı plotted against Ankara and Turkey. The SNDi of new construction in Gölbaşı peaked in 1991-2005, compared to Ankara which followed a zig-zag trend with an overall increase and Turkey which followed a zig-zag trend with an overall increase. Most recently, Gölbaşı's incremental SNDi fell from 2.2 to 1.92 between 1991-2005 and 2006-2020. In terms of the aggregate network, Gölbaşı ranked 4th out of 8 cities in Ankara and 93rd out of 174 in Turkey as of 2020.

New Street Additions (2006–2020)

SNDi value
1.92
Rank in Turkey
53rd of 174
Rank in Ankara
2nd of 8

Entire Network (Aggregate)

SNDi value
2.07
Rank in Turkey
93rd of 174
Rank in Ankara
4th of 8

Rankings go from most connected to most disconnected — rank 1 is the most connected.

What about similarly populated cities?

123456<19751976–19901991–20052006–2020SNDi of street additions
123456<19751976–19901991–20052006–2020SNDi of entire street network
GolbasiAs SuwayrahQian'an

While As Suwayrah and Qian'an both fluctuated in its street-construction patterns, Gölbaşı built increasingly disconnected streets from 1975 through 1991-2005, then improved in new street additions. Looking at the full network, As Suwayrah and Qian'an both became progressively more disconnected, while Gölbaşı grew more disconnected from 1975 through 1991-2005, then improved. Notably, Gölbaşı had a more sprawly network than As Suwayrah in 1975 but the two have since reversed their relative ranking.