Vehicle breakdowns and traffic accidents are particularly dangerous when they happen in a tunnel. Constant exposure to noise, dust and moisture don’t make things easier. For constructional reasons, Emergency Call stations cannot always be installed behind soundproof doors. Also, seeping water and regular exposure to tunnel cleaning equipment require all technical components to be absolutely waterproof. Commend's Tunnel Emergency Stations are specifically designed to withstand these and other environmental influences to ensure ultimate reliability in all conditions.