Since 2008 Han Admiraal works as an independent consultant for Enprodes and is based in Rotterdam, the Netherlands. He is a former part time professor of Underground Space Use at CARUS, the Centre for Applied Research Underground Space. Internationally he is active in the International Tunnelling and Underground Space Association – ITA, as chairman of the ITA Committee on Underground Space (ITACUS). Han Admiraal works as consultant on underground space related matters, including tunnel safety. His approach is that safety dilemmas can only be solved through dialogue. He is a tunnel safety officer for the ‘Dordtse Kil Tunnel’, a road tunnel near the city of Dordrecht in the Netherlands. Admiraal has more than 25 years of experience in the field of (public) infrastructure.