Kollam in context: Street-network sprawl trends
Kollam in context
The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Kollam plotted against Kerala and India. The SNDi of new construction in Kollam was at its lowest in 1976-1990, compared to Kerala which was at its lowest in 1976-1990 and India which followed a zig-zag trend with an overall increase. Most recently, Kollam's incremental SNDi rose from 4.92 to 5.54 between 1991-2005 and 2006-2020. In terms of the aggregate network, Kollam ranked 19th out of 48 cities in Kerala and 1394th out of 1868 in India as of 2020.
New Street Additions (2006–2020)
- SNDi value
- 5.54
- Rank in India
- 1234th of 1868
- Rank in Kerala
- 13th of 48
Entire Network (Aggregate)
- SNDi value
- 4.7
- Rank in India
- 1394th of 1868
- Rank in Kerala
- 19th of 48
Rankings go from most connected to most disconnected — rank 1 is the most connected.
What about similarly populated cities?
- Rome, Italy
- Manchester, United Kingdom
- Lanzhou, China
- Lusaka, Zambia
- Tamluk, India
- Ouagadougou, Burkina Faso
While Rome and Lusaka both fluctuated in its street-construction patterns, Kollam built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns in new street additions. Looking at the full network, Rome and Lusaka both became progressively more disconnected, while Kollam became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards.