Sirius in context: Street-network sprawl trends

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Sirius plotted against Krasnodar and Russia. The SNDi of new construction in Sirius peaked in 1976-1990, compared to Krasnodar which rose steadily and Russia which rose steadily. Most recently, Sirius's incremental SNDi fell from 3.73 to 2.68 between 1991-2005 and 2006-2020. In terms of the aggregate network, Sirius ranked 10th out of 15 cities in Krasnodar and 187th out of 252 in Russia as of 2020.

Rankings go from most connected to most disconnected — rank 1 is the most connected.

What about similarly populated cities?

• Tulsipur, Nepal
• Maniar, India
• Lu, China
• Wuyang, China
• Lowell, United States
• Hechi, China

In new street additions, Sirius built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Tulsipur built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns and Wuyang fluctuated in its street-construction patterns. For the full network, Sirius grew more disconnected from 1975 through 1991-2005, then improved, while Tulsipur became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards and Wuyang became progressively more disconnected. Notably, Sirius had a more connected network than Tulsipur in 1975 but the two have since reversed their relative ranking.