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