The level of street-network sprawl in new development in Gunma peaked in 1976-1990. To get a sense of how street development has changed in Gunma, we can consider three of its most populous cities: Takasaki [Maebashi], Isesaki and Ota. Out of the three cities, Isesaki does not follow the same trend as the region. The level of street-network sprawl in new development in Isesaki followed a zig-zag trend with an overall increase.

How do development practices in Gunma fare in comparison to others in Japan? Most recently in 2006-2020, street construction in Gunma was the 1st-most disconnected out of the 44 regions in Japan. Its position in the ranks since 1975 has risen; relative to other regions in Japan, street construction in Gunma has become more disconnected. Gunma ranked 5th in 1975, 3rd in 1976-1990, 4th in 1991-2005 and 1st in 2006-2020.

As of 2020, the city with the most disconnected street network in Gunma is Takasaki [Maebashi] with an SNDi of 1.8, which is very well-connected. Conversely, the most connected city is Isesaki with an SNDi of 1.45, which is very well-connected. See trends for these cities: Isesaki, Takasaki [Maebashi]

The level of street-network sprawl in the aggregate network in Gunma rose steadily. To get a sense of how the aggregate street network has changed in Gunma, we can consider three of its most populous cities: Takasaki [Maebashi], Isesaki and Ota. Disconnectivity in the most populous cities in Gunma follow the same region trend.

To date, Gunma is the 5th-most disconnected out of the 44 regions in Japan. Its position in the ranks since 1975 has not changed. Gunma ranked 5th in 1975, 5th in 1976-1990, 5th in 1991-2005 and 5th in 2006-2020.