Security requirements in communication networks for transportation systems

Security in communication systems is manifold. It can be classified in two categories: functional security and information or data security. In this paper, the different aspects of security are explained. Then different scenarios of communication networks in transportation systems are analyzed with respect to their inherent the security threats. After the introduction of some existing communication networks, these networks are compared with regard to their suitability for the security scenarios. Open issues and possible workarounds are detailed.