Tung Chung 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 Tung Chung plotted against Islands and Hong Kong. The SNDi of new construction in Tung Chung followed a zig-zag trend, compared to Islands which followed a zig-zag trend with an overall decrease and Hong Kong which rose steadily. Most recently, Tung Chung's incremental SNDi rose from 2.6 to 5.6 between 1991-2005 and 2006-2020. In terms of the aggregate network, Tung Chung ranked 1st out of 1 cities in Islands and 2nd out of 6 in Hong Kong as of 2020.

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

What about similarly populated cities?

• Nagarbera, India
• Nawanshahr, India
• Begunbaria, Bangladesh
• Kalabahi, Indonesia
• Appleton, United States
• Parsauni, India

In new street additions, Tung Chung fluctuated in its street-construction patterns, while Nagarbera fluctuated in its street-construction patterns and Kalabahi built increasingly disconnected streets over time. For the full network, Tung Chung fluctuated in connectivity, while Nagarbera became progressively more disconnected and Kalabahi became progressively more disconnected. Tung Chung and Nagarbera have been growing further apart in their street-network character since 1975.