Context
The chart above shows the evolution of street network disconnectedness of the most connected and most disconnected cities in Tanzania, for both new street additions (left) and the aggregate street network (right).
Tanzania in context: Street-network sprawl of new development
The level of street-network sprawl in new development in Tanzania was at its lowest in 1976-1990. To get a sense of how street development has changed in Tanzania, we can consider three of its most populous regions: Dar es Salaam, Mwanza and Mjini Magharibi. Out of the three regions, Dar es Salaam and Mjini Magharibi do not follow the same trend as the country. The level of street-network sprawl in new development in Dar es Salaam peaked in 1991-2005. The level of street-network sprawl in new development in Mjini Magharibi peaked in 1976-1990.
How do development practices in Tanzania fare in comparison to others in the world? Most recently in 2006-2020, street construction in Tanzania was the 41st-most disconnected out of the 179 countries in the world. Its position in the ranks since 1975 has risen; relative to other countries in the world, street construction in Tanzania has become more disconnected. Tanzania ranked 114th in 1975, 53rd in 1976-1990, 58th in 1991-2005 and 41st in 2006-2020.
The largest city in Tanzania is Dar es-Salaam, with a population of 5402800 people. Taking into account the entire (i.e. aggregate) street network in Dar es-Salaam as of 2020, the overall level of street-network sprawl is 3.47, which is relatively sprawly. The level of street-network sprawl in new development in Dar es-Salaam peaked in 1991-2005.
Tanzania in context: Aggregate street-network sprawl
As of 2020, the city with the most disconnected street network in Tanzania is Arusha with an SNDi of 5.13, which is very sprawly. Conversely, the most connected city is Chato with an SNDi of 1.02, which is very well-connected. See these two cities’ trends in the above graph, or dive deeper into each: Chato, Arusha.
The level of street-network sprawl in the aggregate network in Tanzania was at its lowest in 1976-1990. To get a sense of how the aggregate street network has changed in Tanzania, we can consider three of its most populous regions: Dar es Salaam, Mwanza and Mjini Magharibi. Out of the three regions, Dar es Salaam and Mjini Magharibi do not follow the same trend as the country. The level of street-network sprawl in the aggregate network in Dar es Salaam rose steadily. The level of street-network sprawl in the aggregate network in Mjini Magharibi rose steadily.
To date, Tanzania is the 80th-most disconnected out of the 179 countries in the world. Its position in the ranks since 1975 has risen; relative to other countries in the world, the street network in Tanzania has become more disconnected. Tanzania ranked 114th in 1975, 93rd in 1976-1990, 89th in 1991-2005 and 80th in 2006-2020.
The largest city in Tanzania is Dar es-Salaam, with a population of 5402800 people. Taking into account the entire (i.e. aggregate) street network in Dar es-Salaam as of 2020, the overall level of street-network sprawl is 3.47, which is relatively sprawly. The level of street-network sprawl in the aggregate network in Dar es-Salaam rose steadily.