Çarşamba in context: Street-network sprawl trends

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Çarşamba plotted against Samsun and Turkey. The SNDi of new construction in Çarşamba rose steadily, 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, Çarşamba's incremental SNDi rose from 2.79 to 2.88 between 1991-2005 and 2006-2020. In terms of the aggregate network, Çarşamba ranked 4th out of 5 cities in Samsun and 125th out of 174 in Turkey as of 2020.

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

What about similarly populated cities?

• Hartishek, Ethiopia
• Shipu, China
• Quyang, China
• Glazov, Russia
• Huji, China
• Marapicu, Brazil

While Hartishek and Glazov both fluctuated in its street-construction patterns, Çarşamba built increasingly disconnected streets over time in new street additions. For the full street network, though, all three cities follow the same trend. Çarşamba and Glazov have been growing further apart in their street-network character since 1975.