ABSTRACT
There is no explicit definition of the term high-speed rail. A speed of V = 200 km/h was initially established as a limit of distinction between a train
running at ‘conventional’ speed and a train running at ‘high’ speed. The main reasons for the adoption of the above limit were the following:
• In most upgraded tracks, the radii of curvature in the horizontal alignment of the layout had been selected for maximum passage speed Vpmax = 200 km/h.
