With a large number of reference projects and over 220 transport technology firms, Berlin is the main focus of Germany's transport engineering industry and an ideal venue for InnoTrans, an international platform for buyers and sellers of passenger and freight transport technology. InnoTrans has become established as an international industry showplace focusing on railway technology. A full range of rail vehicles are presented in static displays on the Messe Berlin tracks located outside the exhibition halls. Other key InnoTrans features include Railway Infrastructure, Interiors, Public Transport and Tunnel Construction.