Geography Reference
In-Depth Information
Chapter 8
Robustness Analysis of City Road Network
at Different Granularities
Yingying Duan and Feng Lu
8.1
Introduction
Urban road system undertakes the major transport tasks of human being and
goods which makes it the fundamental infrastructure of a city. This means most
of the socioeconomic activities in cities should use road networks, thus the
performance of road networks is essential to the operation of the entire city (Xie and
Levinson 2009 ). Given the importance of the urban road networks, understanding
its robustness is becoming an important issue of urban planners and transportation
managers at all levels. Robustness analysis of road networks can help identify the
most important streets or locations that will greatly affect the efficiency of the entire
road network and require more attention or planned protection strategies (Yin et al.
2009 ). Furthermore, a better understanding of road network structural robustness
can help improve the robustness of existing road networks by considering network
robustness in road planning and traffic guidance (Zhang and Levinson 2008 ;Santos
et al. 2010 ).
Unfortunately, the robustness of urban road networks is very difficult to evaluate
directly. Firstly, the robustness of urban road networks has multiple types of
performances including the connections and transport efficiency among various
locations in cities. Secondly, the traditional urban road robustness analysis requires
accurate socioeconomic data such as traffic demands, land use, population in
different locations (Jenelius et al. 2006 ). These socioeconomic data are inconvenient
to get for researchers in developing counties, and the quality of the data is not always
assured.
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