A general overview on recent activities of the Technical Committee "Performance of Bituminous Materials" TC 152-PBM of the International Union of Testing and Research Laboratories of Materials and Structures (RILEM) is given, including a state of the art study on testing and appraisal of polymer modified road bitumens. All activities are within the framework of performance related mixture design and part of a basic general testing methodology. Results of three large interlaboratory tests on binder rheology and both design and repeated mechanical loading of mixtures are presented, showing general agreements and suggesting advanced methods to be implemented in the near future. The tests provided new information in addition to already known principles in the field of bitumen and bituminous materials testing methods. This opens the way for further developments to obtain better performance related standards and more durable roads.