Neyshabur 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 Neyshabur plotted against Razavi Khorasan and Iran. The SNDi of new construction in Neyshabur was at its lowest in 1976-1990, compared to Razavi Khorasan which followed a zig-zag trend with an overall increase and Iran which rose steadily. Most recently, Neyshabur's incremental SNDi rose from 3.46 to 4.14 between 1991-2005 and 2006-2020. In terms of the aggregate network, Neyshabur ranked 7th out of 9 cities in Razavi Khorasan and 124th out of 169 in Iran as of 2020.

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

What about similarly populated cities?

• Hami, China
• Qingyang, China
• Chuncheon, South Korea
• Campeche, México
• Awka, Nigeria
• Ziguinchor, Senegal

In new street additions, Neyshabur built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns, while Hami fluctuated in its street-construction patterns and Campeche built increasingly disconnected streets over time. For the full network, Neyshabur became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards, while Hami fluctuated in connectivity and Campeche became progressively more disconnected. Neyshabur and Hami have been converging in their street-network character since 1975.