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

How do development practices in San Martín fare in comparison to others in Peru? Most recently in 2006-2020, street construction in San Martín was the 10th-most disconnected out of the 22 regions in Peru. Its position in the ranks since 1975 has fallen; relative to other regions in Peru, street construction in San Martín has become more connected. San Martín ranked 5th in 1975, 20th in 1976-1990, 6th in 1991-2005 and 10th in 2006-2020.

As of 2020, the city with the most disconnected street network in San Martín is Moyobamba with an SNDi of 2.7, which is relatively well-connected. Conversely, the most connected city is Tarapoto with an SNDi of 2.18, which is well-connected. See trends for these cities: Tarapoto, Moyobamba

The level of street-network sprawl in the aggregate network in San Martín followed a zig-zag trend with an overall increase. To get a sense of how the aggregate street network has changed in San Martín, we can consider two of its most populous cities: Tarapoto and Moyobamba. Out of the two cities, Tarapoto does not follow the same trend as the region. The level of street-network sprawl in the aggregate network in Tarapoto rose steadily.

To date, San Martín is the 13th-most disconnected out of the 22 regions in Peru. Its position in the ranks since 1975 has fallen; relative to other regions in Peru, the street network in San Martín has become more connected. San Martín ranked 5th in 1975, 18th in 1976-1990, 13th in 1991-2005 and 13th in 2006-2020.