Street-network Sprawl in Kecamatan Wanasaba, Indonesia

What is Street-network sprawl?

Street-network Sprawl is a way to measure urban sprawl, worldwide, through the connectedness of the streets. Less sprawl means more connected, more walkable streets. Well-connected streets – like New York City’s grid – are more walkable and can be served by public transit.

The street network is permanent, and its connectivity affects the livability and environmental footprint of cities for decades and centuries to come. In places with more connected streets, residents drive less and walk more. A well-connected street network is associated with better outcomes for health, the environment, sustainable consumption, social integration, and equity.

We can quantify how connected street networks are with the Street Network Disconnectedness Index (SNDi).

SNDi -- our measure of street-network sprawl (disconnectedness)

The SNDi is a comprehensive measurement of “sprawl”. It captures:

A higher SNDi means less-connected streets – i.e., more sprawl. For the 10137 cities in our dataset, the average SNDi is 2.25, with half of the cities' SNDis falling between 1.08 and 3.25.

More information on the sprawl index can be found in these research papers:

To see the state of street-network sprawl across the globe, visit the sprawlmap.

Kecamatan Wanasaba: city in Nusa Tenggara Barat, Indonesia

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 Kecamatan Wanasaba, Indonesia on the sprawlmap

Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Kecamatan Wanasaba as of 2014, the overall level of street-network sprawl is 3.03, which is in the 40th to 60th percentile of disconnectedness.

Trends in street network construction: The SNDis of street construction for the respective time periods are 2.72, 2.12, 2.58 and 4.1. The disconnectivity of new streets constructed in Kecamatan Wanasaba fell, then rose. In 1976-1990, new street layouts were the most connected.

Quantity of street network construction: The street network in Kecamatan Wanasaba spans a total of 255 kilometers. It is dominated by roads constructed in 2001-2014. These roads have an SNDi of 4.1, 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 2.72, 2.51, 2.52 and 3.03. The SNDi of the aggregate street network in fell at first, but Kecamatan Wanasaba has worsened in disconnectivity since 1990.

Kecamatan Wanasaba and Nusa Tenggara Barat follow the same trend in the disconnectivity of their street network constructions. The SNDi for both of these was at its lowest in 1976-1990.

How do development practices in Kecamatan Wanasaba fare in comparison to others in Nusa Tenggara Barat? Most recently in 2001-2014, street construction in Kecamatan Wanasaba was the 7th-most disconnected out of the 10 cities in Nusa Tenggara Barat. Its position in the ranks since 1975 has fallen; relative to other cities in Nusa Tenggara Barat, street construction in Kecamatan Wanasaba has become more connected. Kecamatan Wanasaba ranked 5th in 1975, 4th in 1976-1990, 9th in 1991-2000 and 7th in 2001-2014.

Kecamatan Wanasaba and Indonesia do not follow the same trend in the disconnectivity of their street network constructions. The SNDi in Kecamatan Wanasaba was at its lowest in 1976-1990, while the SNDi of street constructions in Indonesia followed a zig-zag trend with an overall increase.

How do development practices in Kecamatan Wanasaba fare in comparison to others in Indonesia? Most recently in 2001-2014, street construction in Kecamatan Wanasaba was the 157th-most disconnected out of the 363 cities in Indonesia. Its position in the ranks since 1975 has not changed. Kecamatan Wanasaba ranked 157th in 1975, 177th in 1976-1990, 210th in 1991-2000 and 157th in 2001-2014.

Kecamatan Wanasaba and Nusa Tenggara Barat follow the same trend in the disconnectivity of their aggregate street networks. The SNDi for both of these was at its lowest in 1976-1990.

To date, Kecamatan Wanasaba is the 6th-most disconnected out of the 10 cities in Nusa Tenggara Barat. Its position in the ranks since 1975 has fallen; relative to other cities in Nusa Tenggara Barat, the street network in Kecamatan Wanasaba has become more connected. Kecamatan Wanasaba ranked 5th in 1975, 6th in 1976-1990, 7th in 1991-2000 and 6th in 2001-2014.

Kecamatan Wanasaba and Indonesia follow the same trend in the disconnectivity of their aggregate street networks. The SNDi for both of these was at its lowest in 1976-1990.

To date, Kecamatan Wanasaba is the 211th-most disconnected out of the 363 cities in Indonesia. Its position in the ranks since 1975 has fallen; relative to other cities in Indonesia, the street network in Kecamatan Wanasaba has become more connected. Kecamatan Wanasaba ranked 157th in 1975, 219th in 1976-1990, 234th in 1991-2000 and 211th in 2001-2014.

As of 2015, Kecamatan Wanasaba had a built-up area of 8.7 square kilometers, and a population of 218914 people.

These are some other cities with approximately the same population: