Modernisation of track substructure by technology without removing of rails in Czech Republic – Difficulties of this technology

Modernisation of the backbone railway tracks in Czech republic (so-called corridors) will be finished in 2008. In case of some sections especially in the Moravia track substructure was modernised by technology without removing of rails by up-to-date machinery from abroad (AHM800, RPM2002). The main difficulties of modernisation by technology without...