The STUVA conference took place in Stuttgart from 6 to 8 December. The event takes place every two years and is organized by the Studiengesellschaft für Tunnel und Verkehrsanlagen (STUVA). With around 3500 participants, exhibitors and visitors, the number of participants was once again at a record high. The STUVA conference is one of the world's leading and largest conferences in the tunnel construction industry. Prof. Dr.-Ing. Martin Ziegler, re-elected Chairman of the Executive Board, gave the opening speech and awarded the STUVA Prize to Deutsche Bahn AG for outstanding achievements and innovations in the field of underground construction.