ABSTRACT
ABSTRACT: An increasing number of disasters are frequently reported with huge loss of life and assets, both on the surface and underground in mega cities. However, there is still not a working 3D GIS-based vehicle emergency routing algorithm with due emphasis on the third dimension and the effective and comprehensive use of dynamic emergency information. In this paper, a multidimensional and dynamic vehicle emergency routing algorithm is proposed. The algorithm is based on the functional requirement analysis of 3D vehicle emergency routing. To integrate multidimensional and dynamic information into the algorithm visually, effectively and comprehensively, this paper discusses the construction of 3D dynamic road networks, as well as the corresponding network optimization and multi-criteria evaluation methods in a 3D GIS environment. The proposed algorithm and its applications to 3D emergency routing/navigation have been implemented inVGEGIS™ software, and the advantages of 3D GIS-based algorithm over traditional algorithm are also discussed through experimental results.
