Sumgayit in context: Street-network sprawl trends

Sumgayit in context

4.54.85.15.4<19751976–19901991–20052006–2020SNDi of street additions
4.54.85.15.4<19751976–19901991–20052006–2020SNDi of entire street network
SumgayitAbsheron (Region)Azerbaijan (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Sumgayit plotted against Absheron and Azerbaijan. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Sumgayit's incremental SNDi fell from 5.5 to 5.04 between 1991-2005 and 2006-2020. In terms of the aggregate network, Sumgayit ranked 2nd out of 2 cities in Absheron and 16th out of 20 in Azerbaijan as of 2020.

New Street Additions (2006–2020)

SNDi value
5.04
Rank in Azerbaijan
14th of 20
Rank in Absheron
1st of 2

Entire Network (Aggregate)

SNDi value
5.09
Rank in Azerbaijan
16th of 20
Rank in Absheron
2nd of 2

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

What about similarly populated cities?

468<19751976–19901991–20052006–2020SNDi of street additions
468<19751976–19901991–20052006–2020SNDi of entire street network
SumgayitYuhuMoirabari

In new street additions, Sumgayit built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Yuhu built increasingly disconnected streets from 1975 through 1976-1990, then improved and Moirabari fluctuated in its street-construction patterns. For the full network, Sumgayit and Yuhu both grew more disconnected from 1975 through 1991-2005, then improved, while Moirabari became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards. Notably, Sumgayit had a more connected network than Yuhu in 1975 but the two have since reversed their relative ranking.