In the majority of railway vehicles, lateral bumpstops are commonly used in order to prevent excessive lateral displacement of the carbody when curve negotiation. When contacting these bumpstops, there is a high enlargement of lateral stiffness and therefore an increase of vibrations transmitted from the bogie to the body. The paper presents the design of a system that allows limiting the lateral movement of the vehicle during curve negotiation without significantly increasing the lateral stiffness. The use of bumpstops would be restricted, therefore, to a mere element of safety that would act in case of malfunction of the hold off system. The paper describes the different phases of the design process starting from a preliminary step, which is the definition of requirements to be fulfilled and finalizing with the solution adopted. The system proposed is based on a pneumatic system.
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