Zabid in context: Street-network sprawl trends

Zabid in context

3456<19751976–19901991–20052006–2020SNDi of street additions
3456<19751976–19901991–20052006–2020SNDi of entire street network
ZabidAl Hudaydah (Region)Yemen (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Zabid plotted against Al Hudaydah and Yemen. The SNDi of new construction in Zabid peaked in 1976-1990, compared to Al Hudaydah which followed a zig-zag trend with an overall increase and Yemen which followed a zig-zag trend with an overall increase. Most recently, Zabid's incremental SNDi fell from 4.86 to 4.37 between 1991-2005 and 2006-2020. In terms of the aggregate network, Zabid ranked 7th out of 8 cities in Al Hudaydah and 43rd out of 58 in Yemen as of 2020.

New Street Additions (2006–2020)

SNDi value
4.37
Rank in Yemen
22nd of 58
Rank in Al Hudaydah
6th of 8

Entire Network (Aggregate)

SNDi value
5.91
Rank in Yemen
43rd of 58
Rank in Al Hudaydah
7th of 8

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

What about similarly populated cities?

34567<19751976–19901991–20052006–2020SNDi of street additions
34567<19751976–19901991–20052006–2020SNDi of entire street network
ZabidNoorpurMalakanagiri

In new street additions, Zabid built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Noorpur built increasingly disconnected streets from 1975 through 1991-2005, then improved and Malakanagiri built increasingly disconnected streets over time. For the full network, Zabid grew more disconnected from 1975 through 1976-1990, then improved, while Noorpur grew more disconnected from 1975 through 1991-2005, then improved and Malakanagiri became progressively more disconnected. Zabid and Noorpur have been converging in their street-network character since 1975.