Jerash 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 Jerash plotted against Jarash and Jordan. While Jarash and Jordan both followed a zig-zag trend with an overall decrease, Jerash's new street additions followed a zig-zag trend with an overall increase. Most recently, Jerash's incremental SNDi rose from 2.97 to 3.0 between 1991-2005 and 2006-2020. In terms of the aggregate network, Jerash ranked 1st out of 1 cities in Jarash and 10th out of 16 in Jordan as of 2020.

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

What about similarly populated cities?

• Gummidipundi, India
• Kalmunai, Sri Lanka
• Al-Gharaq, Egypt
• Xincai, China
• Langwarrin, Australia
• Palitana, India

While Gummidipundi and Xincai both built increasingly disconnected streets from 1975 through 1991-2005, then improved, Jerash fluctuated in its street-construction patterns in new street additions. For the full network, Jerash fluctuated in connectivity, while Gummidipundi grew more disconnected from 1975 through 1991-2005, then improved and Xincai became progressively more disconnected. Jerash and Gummidipundi have been growing further apart in their street-network character since 1975.