- Renewal of police signalling equipment, directional signalling and operating equipment assigned to the closure of the tunnel, including power supply and connection to the PC,

- restraint systems

-sanitation

- civil engineering

- operation under construction

- renewal of police signalling equipment, directional signalling and operating equipment assigned to the closure of the tunnel at the tunnel heads and in the tunnel;

- renewal and addition of certain operating equipment upstream of the tunnel heads assigned to the closure of the tunnel;

- work necessary for the supply and connection to the control station of dynamic devices and their integration into the existing computer system;

- addition, to the modification or replacement of permanent restraint systems to the right of equipment replaced or added;

- civil engineering works and associated VRD;

- operation under associated construction site