Christos N. Pyrgidis is a professor in railway engineering at the Aristotle University of Thessaloniki (AUTh), Greece. He earned a diploma in civil engineering (AUTh, 1981). He specialised for five years at the Ecole Nationale des Ponts et Chaussées, Paris, France, in transportation infrastructure (CES), transport economics (DEA), and railway engineering (PhD). From 2004 – 2007, he served as the Greek representative to the Administrative Board of the European Railway Agency. Since 2014 he has been a member of the Scientific Committee of SHIFT2RAIL.