Phumi Roessei 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 Phumi Roessei plotted against Otdar Mean Chey and Cambodia. The SNDi of new construction in Phumi Roessei was at its lowest in 1991-2005, compared to Otdar Mean Chey which followed a zig-zag trend with an overall decrease and Cambodia which rose steadily. Most recently, Phumi Roessei's incremental SNDi rose from 1.47 to 5.12 between 1991-2005 and 2006-2020. In terms of the aggregate network, Phumi Roessei ranked 2nd out of 3 cities in Otdar Mean Chey and 11th out of 12 in Cambodia as of 2020.

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

What about similarly populated cities?

• Lulis, Kenya
• Tonborho, Guinea
• Khum Pech Chenda, Cambodia
• Phsar Prom, Cambodia
• Kalma Camp, Sudan
• Sesquilé, Colombia

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