We are experts in the provision of ancillary facilities for underground structures:
・ electrical installations for tunnel facilities;
・ lighting and interior fittings to create good visibility and relaxed driving conditions;
・ ventilation systems to maintain clear and safe driving conditions; and
・ emergency safety facilities and equipment for the prevention of disasters.

NCC provides services for the rational repair and reinforcement of existing tunnels to extend their economic life. We are also the only company in Japan offering technical support for an advanced monitoring system that underpins maintenance management and ensures tunnel durability.