The prime objective of the innovation project is to finalize the development of the “TUNNEL FIRE STOPPER” or TFS. A system is designed to combat fire in tunnels. It moves on a monorail installed on the arch of the tunnel where lights, ventilation, warning signs and the like are no longer a problem. It works automatically or is controlled remotely to arrive to fire and disperse the extinguishing agent that is carried in a tank with it, transported to fire thus successfully extinguishing the fire. The TFS trolley has an extinguishing cannon which moves 240° vertically and 360° horizontally so the installation is not a problem. TFS is appropriate for tunnels which are high enough and is not suitable for every tunnel. However it is certainly appropriate for modern tunnels, for example it is appropriate for all tunnels in Slovenia. TFS trolley can be adapted to make it slimmer by making it longer. Our customers are road tunnel operators not just EU wide but globally. The key market application is the service to equip the tunnel with this solution.