Sidi Yahya Zaer 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 Sidi Yahya Zaer plotted against Rabat - Salé - Zemmour - Zaer and Morocco. The SNDi of new construction in Sidi Yahya Zaer peaked in 1976-1990, compared to Rabat - Salé - Zemmour - Zaer which followed a zig-zag trend with an overall increase and Morocco which followed a zig-zag trend with an overall increase. Most recently, Sidi Yahya Zaer's incremental SNDi fell from 3.21 to 2.94 between 1991-2005 and 2006-2020. In terms of the aggregate network, Sidi Yahya Zaer ranked 5th out of 5 cities in Rabat - Salé - Zemmour - Zaer and 65th out of 72 in Morocco as of 2020.

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

What about similarly populated cities?

• Momostenango, Guatemala
• Pundri, India
• Lethbridge, Canada
• Turbo, Colombia
• Atascocita, United States
• Penápolis, Brazil

In new street additions, Sidi Yahya Zaer built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Momostenango built increasingly disconnected streets from 1975 through 1991-2005, then improved and Turbo fluctuated in its street-construction patterns. Looking at the full network, Momostenango and Turbo both became progressively more disconnected, while Sidi Yahya Zaer grew more disconnected from 1975 through 1976-1990, then improved. Sidi Yahya Zaer and Momostenango have been growing further apart in their street-network character since 1975.