Vehicular networks are sets of surface transportation systems that have the ability to communicate with each other. There are\r\nseveral possible network architectures to organize their in-vehicle computing systems. Potential schemes may include vehicle-tovehicle\r\nad hoc networks, wired backbone with wireless last hops, or hybrid architectures using vehicle-to-vehicle communications\r\nto augment roadside communication infrastructures. Some special properties of these networks, such as high mobility, network\r\npartitioning, and constrained topology, differentiate them from other types of wireless networks. We provide an in-depth\r\ndiscussion on the important studies related to architectural design and routing for such networks.Moreover, we discuss the major\r\nsecurity concerns appearing in vehicular networks.
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