The Bilbao Metro Network had previously selected a TETRA solution ‒ used by public safety agencies and transportation entities such as Euskotren and ETS, as well as Bilbao Metro. To further enhance the network LTE technology was also recently deployed, in conjunction with the existing network, to provide uninterrupted, highly available, real-time video monitoring. In combination with the mission-critical capabilities of the existing TETRA network, it offers a significant boost to security in the Metro, and thereby helps facilitate a coordinated response in an emergency situation. Encompassing voice and data, the fully integrated TETRA-LTE system provides real-time video transmission between trains, stations and the command and control centre in Bilbao, as well as from the portable devices used by the security staff onboard or in the station. This project is an ideal example of how both TETRA and LTE technologies can operate simultaneously to provide the best outcome for the users.