Optimisation of the operation and the maintenance of the tunnel equipment systems on the Zagreb- Macelj motorway

The paper focuses on the features of maintenance of tunnel equipment systems on the Zagreb-Macelj motorway in the course of the motorway exploatation. Tunnel equipment systems are functional units that together create the comprehensive system for control, management and saftey of traffic in the tunnels. Maintenance of the tunnel equipment systems implies optimisation of parameters of each individual tunnel equipment systems as well as optimisation of parameters of the comprehensive system as a whole. Systematic aproach to the operation and to the maintenance of the tunnel equipment systems represents foundation for undisturbed and safe traffic flow through the tunnels.