Underground infrastructures
Underground traffic routes are indispensable woldwide, especially in urban areas. They get people to work directly and fast. Metro and Light Rail trains become thereby often a place to work - in the evening you will return home and on weekends it will take you to various leisure activities. Road tunnels assure performance in individual mobility, relieve inner cities and avoid traffic jams and exhaust fumes. Underground traffic has become indispensable as an essential part of daily life, especially in big cities today. Hence, the need for underground infrastructure will continue to grow in the future.