Tashkent in context: Street-network sprawl trends

Tashkent in context

33.64.24.8<19751976–19901991–20052006–2020SNDi of street additions
33.64.24.8<19751976–19901991–20052006–2020SNDi of entire street network
TashkentToshkent Shahri (Region)Uzbekistan (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Tashkent plotted against Toshkent Shahri and Uzbekistan. The SNDi of new construction in Tashkent peaked in 1991-2005, compared to Toshkent Shahri which peaked in 1991-2005 and Uzbekistan which rose steadily. Most recently, Tashkent's incremental SNDi fell from 4.55 to 4.1 between 1991-2005 and 2006-2020. In terms of the aggregate network, Tashkent ranked 1st out of 1 cities in Toshkent Shahri and 37th out of 72 in Uzbekistan as of 2020.

New Street Additions (2006–2020)

SNDi value
4.1
Rank in Uzbekistan
31st of 72
Rank in Toshkent Shahri
1st of 1

Entire Network (Aggregate)

SNDi value
3.61
Rank in Uzbekistan
37th of 72
Rank in Toshkent Shahri
1st of 1

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

What about similarly populated cities?

33.64.2<19751976–19901991–20052006–2020SNDi of street additions
33.64.2<19751976–19901991–20052006–2020SNDi of entire street network
TashkentChangshaMelbourne

Tashkent, Changsha, and Melbourne all built increasingly disconnected streets from 1975 through 1991-2005, then improved in new street construction. For the full network, Tashkent and Melbourne both became progressively more disconnected, while Changsha grew more disconnected from 1975 through 1991-2005, then improved. Tashkent and Changsha have been converging in their street-network character since 1975.