The objectives are:
To optimise the thermal and structural behaviour of all tunnel components designed for active and passive safety.
To increase the robustness and load bearing capacity under accidental conditions.
To assess the performance of the integral tunnel structure in all fire phases conditions: from ignition, through growth to the fully developed stage and the decay period.
To achieve a robust working/functioning complete system - including the effects of fire temperatures.
To reduce and limit non operational time and repair retrofitting work.
To evaluate existing technology with main emphasis on cost-benefit (including maintenance).
To establish safer design and to evaluate recommendations for optimal tunnel systems.