Dera Allah Yar in context: Street-network sprawl trends

Dera Allah Yar in context

3.54.24.95.6<19751976–19901991–20052006–2020SNDi of street additions
3.54.24.95.6<19751976–19901991–20052006–2020SNDi of entire street network
Dera Allah YarBalochistan (Region)Pakistan (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Dera Allah Yar plotted against Balochistan and Pakistan. The SNDi of new construction in Dera Allah Yar was at its lowest in 1991-2005, compared to Balochistan which rose steadily and Pakistan which followed a zig-zag trend with an overall increase. Most recently, Dera Allah Yar's incremental SNDi rose from 3.61 to 4.28 between 1991-2005 and 2006-2020. In terms of the aggregate network, Dera Allah Yar ranked 11th out of 19 cities in Balochistan and 137th out of 292 in Pakistan as of 2020.

New Street Additions (2006–2020)

SNDi value
4.28
Rank in Pakistan
112th of 292
Rank in Balochistan
12th of 19

Entire Network (Aggregate)

SNDi value
3.91
Rank in Pakistan
137th of 292
Rank in Balochistan
11th of 19

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
Dera Allah YarMount HagenShi`b al Ghayl

In new street additions, Dera Allah Yar built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns, while Mount Hagen built increasingly disconnected streets over time and Shi`b al Ghayl fluctuated in its street-construction patterns. For the full network, Dera Allah Yar became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards, while Mount Hagen became progressively more disconnected and Shi`b al Ghayl fluctuated in connectivity. Dera Allah Yar and Mount Hagen have been growing further apart in their street-network character since 1975.