Page 54 - Microsoft Word - 20120528 Unesco study
P. 54
4.2.3 Accessibility of the region
To obtain some insights of the consequences of flooding for the accessibility of individual
areas, a road network analysis has been performed on Villahermosa. Using a search algorithm,
the maximum extent has been calculated that can be reached from the center of Villahermosa
without crossing inundated roads.
The results obtained provide some insights into the effects of traffic interruption as a
consequence of flooding.
These results have been set against the calculated extent, during dry conditions within a
threshold of 250km (i.e. all areas that can be reached within a 250km boundary using the
existing road network).
Figure 4.5: Service area Villahermosa dry circumstances
53
