A survey of interoperability concepts for security systems in public transport

In large urban hubs such as metro or train stations, transportation operators and first responders collaborate in the prevention of and reaction to security issues. In order to optimize their specific daily operational business needs, heterogeneous information and communication systems are used. In case of an incident, however, it is crucial that the various involved parties exchange relevant information to get a shared understanding and act in a coordinated way in critical situations. Yet, heterogeneous communication and information systems infrastructures often disrupt this crucial flow of information. This contribution provides a survey of current research with regard to system-of-systems for information systems in the domain of security in public urban transportation. It was developed in the EU-funded security project SECUR-ED, and may support the involved stakeholders in dealing with a diversity of security challenges, technologies and organizational procedures. We integrate the results of earlier projects and synthesize them on a homogenous level of abstraction. This results in first insights regarding modeling and design requirements of an interoperable system-of systems for this application domain.