The paper provides an overview on mobility challenges in the tunnel environment, it summarizes requirements on safety and emergency response that are negatively affected by limited availability or even lack of Global Navigation Satellite Systems in tunnels. The paper provides an alternative way on how to enable positioning in tunnels by using additional Bluetooth Low Energy (BLE) infrastructure with a focus on emergency response. The BLE infrastructure supports advanced systems such as Cooperative-Intelligent Transport Systems (C-ITS), and therefore it is possible to disseminate locally relevant information among the cars and to the tunnel operators. The paper considers various scenarios and provides use case definition supported by testing of C-ITS and functional validation from the Blanka tunnel in Prague. The proposed solution improves usage applications that require accurate positioning data to ensure proper functions, and therefore enables use of navigation in the tunnel environment. These could help to general use for wide range of drivers, however, the main goal is to efficiently assist during the rescue and recovery, or even smooth pass of emergency vehicle. The presented outcomes support preparation of strategic documents for Czech legislation and standards for the gradual installation of technologies in the tunnel, leading to better dissemination about emergency and other unexpected events to improve driver awareness through vehicular communication and reliable navigation.