Tekkeköy in context: Street-network sprawl trends

Tekkekoy in context

1.82.433.6<19751976–19901991–20052006–2020SNDi of street additions
1.82.433.6<19751976–19901991–20052006–2020SNDi of entire street network
TekkekoySamsun (Region)Turkey (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Tekkeköy plotted against Samsun and Turkey. The SNDi of new construction in Tekkeköy peaked in 1976-1990, compared to Samsun which followed a zig-zag trend with an overall increase and Turkey which followed a zig-zag trend with an overall increase. Most recently, Tekkeköy's incremental SNDi fell from 1.97 to 1.81 between 1991-2005 and 2006-2020. In terms of the aggregate network, Tekkeköy ranked 5th out of 5 cities in Samsun and 128th out of 174 in Turkey as of 2020.

New Street Additions (2006–2020)

SNDi value
1.81
Rank in Turkey
39th of 174
Rank in Samsun
3rd of 5

Entire Network (Aggregate)

SNDi value
2.59
Rank in Turkey
128th of 174
Rank in Samsun
5th of 5

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

What about similarly populated cities?

2.12.83.54.2<19751976–19901991–20052006–2020SNDi of street additions
2.12.83.54.2<19751976–19901991–20052006–2020SNDi of entire street network
TekkekoyZangoAma Apu

In new street additions, Tekkeköy and Ama Apu both built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Zango fluctuated in its street-construction patterns. For the full network, Tekkeköy and Ama Apu both grew more disconnected from 1975 through 1976-1990, then improved, while Zango became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards. Tekkeköy and Zango have been converging in their street-network character since 1975.