Thanks to the development of our methodology on sizing and vibration control, we have developed unique technical solutions such as structural impedance breaking: acoustic expansion joints, acoustic trenches, etc. These solutions avoid the suspension of structures, allowing a significant limitation of work costs. Moreover, our applied research on vibration protection positioned us on the European call for tender Prédit 1 Noises de transports which was the winner of the project “Development of a vibration underlay for transport routes at low cost ". This research not only allowed us to assert our expertise in modeling transport vibration protection but also led to a patent being filed.