The level of street-network sprawl in new development in Kagoshima followed a zig-zag trend with an overall increase. To get a sense of how street development has changed in Kagoshima, we can consider three of its most populous cities: Kagoshima, Kirishima and Aira. Disconnectivity in the most populous cities in Kagoshima follow the same region trend.

How do development practices in Kagoshima fare in comparison to others in Japan? Most recently in 2006-2020, street construction in Kagoshima was the 34th-most disconnected out of the 44 regions in Japan. Its position in the ranks since 1975 has fallen; relative to other regions in Japan, street construction in Kagoshima has become more connected. Kagoshima ranked 24th in 1975, 30th in 1976-1990, 21st in 1991-2005 and 34th in 2006-2020.

As of 2020, the city with the most disconnected street network in Kagoshima is Kagoshima with an SNDi of 2.82, which is relatively well-connected. Conversely, the most connected city is Kirishima with an SNDi of 1.81, which is very well-connected. See trends for these cities: Kirishima, Kagoshima

The level of street-network sprawl in the aggregate network in Kagoshima rose steadily. To get a sense of how the aggregate street network has changed in Kagoshima, we can consider three of its most populous cities: Kagoshima, Kirishima and Aira. Disconnectivity in the most populous cities in Kagoshima follow the same region trend.

To date, Kagoshima is the 26th-most disconnected out of the 44 regions in Japan. Its position in the ranks since 1975 has fallen; relative to other regions in Japan, the street network in Kagoshima has become more connected. Kagoshima ranked 24th in 1975, 25th in 1976-1990, 25th in 1991-2005 and 26th in 2006-2020.