The primary objective of the ST4RT (Semantic Transformations for Rail Transportation) project is to develop a demonstrator tool that will provide ontology-based transformations between different standards and protocols, resulting in enhanced semantic interoperability between disparate, heterogeneous legacy systems.

Such transformation technology is essential to achieving the goals for the Interoperability Framework (IF) that will provide the right tools in order to introduce seamless mobility services, foster the development of multi-modal travel services and help to overcome the obstacles currently impeding the development of market innovation and limiting a large acceptance of the semantic web for transportation.