Used for giving information and instructions to all participants in the traffic. They are installed on the tunnel ceiling and on the open highways on portals or half-portal metal constructions.
Traffic lights and blinkers
Installed on tunnel portals and in front of every second SOS niche.
Marking evacuation routes.
In tunnels, it is necessary to mark evacuation routes in case of fire. For that purpose, in each tunnel tube on pedestrian emergency walkways, on each 25 meters, there is a sign with internal illumination. The signs show evacuation route direction and the distance to the closest exit and they have to be illuminated at all times.
Internal illumination signs also mark SOS niches and pedestrian walkways.
Data relevant to assessing traffic conditions (exact number of vehicles on the highway) are gathered by measuring traffic flow with traffic counters.
Traffic counters are implemented by installing inductive loops underneath an asphalt surface, which are then connected to the traffic counter. Communication with TMCC is done via IP network.
Traffic counter has a one-way communication with TMCC.
Vehicle height measuring device is mounted on the portal extension before plateau expansion in front of the tunnel or on the highway. Vehicle height detectors are based on active infrared technology.
The device is connected to a software module that will, at the tunnel or the highway entrance, issue a warning for the driver of a high vehicle to stop the vehicle and it will redirect it to an alternative route.
In case of detection of a vehicle that is too high, the system will, via pre-set algorithms, activate the equipment for vehicle redirection.
Meteorological stations are used for gathering meteorological info about pavement conditions and are in charge of complete highway surface analysis and meteorological conditions for highway or bridge monitoring. Also, meteorological stations issue warnings about meteorological forecasts.
In addition to sensors on the meteorological station installed next to the highway, there are also sensors in the pavement that are connected with the meteorological station.
In order to secure access to the tunnels, bridges and other highway sections with possible restricted access, there is a need for robust and reliable barriers.
Taking into consideration highways width, barriers with 8m boom are installed. Barriers can be operated by operators in TMCC.