Increase of Travel Safety for Public Transport by Mobile Applications Topics: Business Models; Business Models; Business Policy, Strategy and Governance; Business Process Management; Business-It Alignment; Collaborative Systems; Context-Awareness; Demonstrators and Applications; Government; Information Quality; Integration/Interoperability; Internationalization and Social, Ethical and Cultural Factors; M-Business Models; Middleware Platforms; Mobile Architectures; Mobile User Interfaces; Platforms and Architectures; Social Networks; Technologies and Tools; Trust/Security/Protection; Ubiquity; Urban/Regional Planning/Development; Web Services In Proceedings of the 4th International Conference on Data Communication Networking, 10th International Conference on e-Business and 4th International Conference on Optical Communication Systems - Volume 1: ICE-B, 106-114, 2013 , Reykjavík, Iceland