Based on many accidents in road tunnels a new firefighting product named Tunnel Fire Stopper (TFS) was designed. The prime objective of the project is to finalize the development of the innovative Tunnel Fire Stopper to improve fire safety in tunnels, which is also a requirement of Directive 2004/54/EC that lays down a set of harmonized minimum safety standards. TFS represents a new dynamic method of improving fire safety in tunnels compared to conventional technologies since it is able to extinguish a fire within seconds after it is detected and short intervention time is essential for combating fire as quickly as possible. Therefore, the overall objective is to finalize the development of TFS and to contribute to the implementation of the EC directive and SAFE-T (EC funded project recommendations) in road tunnels via launching disruptive breakthrough for transport safety markets, effectively stopping fires, and reducing the effects of fire on the vehicles in tunnels, as well as the effect on the road tunnel infrastructure.