For those who wants to model the German high-speed railway network (read: ICE), the ballastless track system is a common feature on certain stretches, one of them is the Frankfurt-Köln strecth with 4% gradient. In this website Project VDE8 (Projekt Deutsch Einheit 8), the construction of the ballastless track system is explained and illustrated. This will help you in modelling the system in your preferred scale. Source: Project VDE8 Continue reading Ballastless Track System for German High-speed Railway