Abstract:
Urban streets demonstrate a hierarchical structure in the sense that a majority is
trivial, while a minority is vital [1]. Jiang claimed that “coherent urban streets
demonstrate a scaling law and characterised by the 80/20 road hierarchy principle,
i.e. 80% of streets are less central (below the average), while 20% of streets are
more central (above the average); out of the 20%, there is 1% of streets that are
extremely well central” [1]. Recent works on structural analysis of urban street
networks in terms of topological centrality in European and USA cities done by
Yang et al. [2], Hillier et al. [3], Huang et al. [4], Levinson [5], Wang et al. [6], Gao
et al. [7], have also supported the above claim. Accordingly, network centrality is
used as a strategic planning tool to identify the structural coherence of transport
networks. Inspired by the previous works, this study examines the structural
coherence of the road network of Colombo city from the perspective of topological
centrality.
