Gemlik in context: Street-network sprawl trends

Gemlik in context

1.622.42.8<19751976–19901991–20052006–2020SNDi of street additions
1.622.42.8<19751976–19901991–20052006–2020SNDi of entire street network
GemlikBursa (Region)Turkey (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Gemlik plotted against Bursa and Turkey. The SNDi of new construction in Gemlik rose steadily, compared to Bursa which followed a zig-zag trend with an overall increase and Turkey which followed a zig-zag trend with an overall increase. Most recently, Gemlik's incremental SNDi rose from 2.14 to 2.97 between 1991-2005 and 2006-2020. In terms of the aggregate network, Gemlik ranked 6th out of 6 cities in Bursa and 82nd out of 174 in Turkey as of 2020.

New Street Additions (2006–2020)

SNDi value
2.97
Rank in Turkey
134th of 174
Rank in Bursa
6th of 6

Entire Network (Aggregate)

SNDi value
1.97
Rank in Turkey
82nd of 174
Rank in Bursa
6th of 6

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

What about similarly populated cities?

0.91.82.73.6<19751976–19901991–20052006–2020SNDi of street additions
0.91.82.73.6<19751976–19901991–20052006–2020SNDi of entire street network
GemlikLuanchengJunagarh

In new street additions, Gemlik built increasingly disconnected streets over time, while Luancheng built increasingly disconnected streets from 1975 through 1976-1990, then improved and Junagarh built increasingly connected streets over time. For the full network, Gemlik became progressively more disconnected, while Luancheng grew more disconnected from 1975 through 1991-2005, then improved and Junagarh became progressively more connected. Gemlik and Junagarh have been converging in their street-network character since 1975.