Puducherry: region in India
What exactly constitutes the spatial extent of the city? For these aggregations, we used the Global Human Settlement Layer Urban Center Database (GHS-UCDB) to define the boundaries of the city. These cities -- or urban centers -- cover areas that are densely populated and built-up, and so may extend beyond the spatial borders of these cities that we may be familiar with. The GHS area is shaded in blue.
View Puducherry, India on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Puducherry as of 2014, the overall level of street-network sprawl is 4.55, which is highly disconnected.
Trends in street network construction: The SNDis of street construction for the respective time periods are 4.78, 2.91, 4.33 and 6.03. The disconnectivity of new streets constructed in Puducherry fell, then rose. In 1976-1990, new street layouts were the most connected.
Quantity of street network construction: The street network in Puducherry spans a total of 1331 kilometers. It is dominated by roads constructed in 2001-2014. These roads have an SNDi of 6.03, which is highly disconnected.
Effect on the aggregate network: New construction in each period adds to the total stock of streets, but does not change streets that have already been built. Therefore, it has a limited effect on the street network as a whole. The SNDis of the aggregate street network in the respective time periods are 4.78, 2.99, 3.51 and 4.55. The SNDi of the aggregate street network in fell at first, but Puducherry has worsened in disconnectivity since 1990.
The level of street-network sprawl in new development in Puducherry was at its lowest in 1976-1990. To get a sense of how street development has changed in Puducherry, we can consider three of its most populous cities: Puducherry, Karaikal and Yanam. Out of the three cities, Karaikal and Yanam do not follow the same trend as the region. The level of street-network sprawl in new development in Karaikal followed a zig-zag trend with an overall increase. The level of street-network sprawl in new development in Yanam followed a zig-zag trend.
How do development practices in Puducherry fare in comparison to others in India? Most recently in 2001-2014, street construction in Puducherry was the 9th-most disconnected out of the 35 regions in India. Its position in the ranks since 1975 has not changed. Puducherry ranked 9th in 1975, 29th in 1976-1990, 20th in 1991-2000 and 9th in 2001-2014.
As of 2014, the city with the most disconnected street network in Puducherry is Puducherry with an SNDi of 4.36, which is highly disconnected. Conversely, the most connected city is Yanam with an SNDi of 2.57, which is in the 40th to 60th percentile of disconnectedness. See trends for these cities: Yanam, Puducherry
The level of street-network sprawl in the aggregate network in Puducherry was at its lowest in 1976-1990. To get a sense of how the aggregate street network has changed in Puducherry, we can consider three of its most populous cities: Puducherry, Karaikal and Yanam. Out of the three cities, Yanam does not follow the same trend as the region. The level of street-network sprawl in the aggregate network in Yanam followed a zig-zag trend.
To date, Puducherry is the 15th-most disconnected out of the 35 regions in India. Its position in the ranks since 1975 has fallen; relative to other regions in India, the street network in Puducherry has become more connected. Puducherry ranked 9th in 1975, 28th in 1976-1990, 24th in 1991-2000 and 15th in 2001-2014.