Erbaa in context: Street-network sprawl trends

Erbaa in context

1.82.12.42.7<19751976–19901991–20052006–2020SNDi of street additions
1.82.12.42.7<19751976–19901991–20052006–2020SNDi of entire street network
ErbaaTokat (Region)Turkey (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Erbaa plotted against Tokat and Turkey. The SNDi of new construction in Erbaa was at its lowest in 1976-1990, compared to Tokat which was at its lowest in 1991-2005 and Turkey which followed a zig-zag trend with an overall increase. Most recently, Erbaa's incremental SNDi rose from 1.9 to 2.59 between 1991-2005 and 2006-2020. In terms of the aggregate network, Erbaa ranked 1st out of 2 cities in Tokat and 80th out of 174 in Turkey as of 2020.

New Street Additions (2006–2020)

SNDi value
2.59
Rank in Turkey
113th of 174
Rank in Tokat
2nd of 2

Entire Network (Aggregate)

SNDi value
1.96
Rank in Turkey
80th of 174
Rank in Tokat
1st of 2

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

What about similarly populated cities?

2345<19751976–19901991–20052006–2020SNDi of street additions
2345<19751976–19901991–20052006–2020SNDi of entire street network
ErbaaTegbiWangcang County

While Tegbi and Wangcang County both fluctuated in its street-construction patterns, Erbaa built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns in new street additions. For the full network, Erbaa became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards, while Tegbi grew more disconnected from 1975 through 1976-1990, then improved and Wangcang County became progressively more disconnected. Notably, Erbaa had a more sprawly network than Wangcang County in 1975 but the two have since reversed their relative ranking.