Digboi in context: Street-network sprawl trends

Digboi in context

468<19751976–19901991–20052006–2020SNDi of street additions
468<19751976–19901991–20052006–2020SNDi of entire street network
DigboiAssam (Region)India (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Digboi plotted against Assam and India. The SNDi of new construction in Digboi rose steadily, compared to Assam which rose steadily and India which followed a zig-zag trend with an overall increase. Most recently, Digboi's incremental SNDi rose from 7.28 to 8.42 between 1991-2005 and 2006-2020. In terms of the aggregate network, Digboi ranked 50th out of 67 cities in Assam and 1606th out of 1868 in India as of 2020.

New Street Additions (2006–2020)

SNDi value
8.42
Rank in India
1690th of 1868
Rank in Assam
39th of 67

Entire Network (Aggregate)

SNDi value
5.45
Rank in India
1606th of 1868
Rank in Assam
50th of 67

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

What about similarly populated cities?

2468<19751976–19901991–20052006–2020SNDi of street additions
2468<19751976–19901991–20052006–2020SNDi of entire street network
DigboiLancasterTinaquillo

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