Express Train Definition

UIC (International Union of Railways, International Railways Association) has defined the 'high-speed train' as the trains that can speed at least 250 km per hour on new lines and at least 200 km per hour on existing lines. Most high-speed train systems have a number of characteristics in common. Most of them work with electricity from the lines on the train. However, this does not apply to all high-speed trains, as some high-speed trains run on diesel. A more precise definition concerns the nature of the rails. High-speed train tracks consist of rails welded along the line to reduce vibration and prevent openings between rail segments. In this way, trains can pass smoothly at a speed of 200 km per hour. The most important obstacle to the speed of trains is their slope radius. Although it may vary according to the design of the lines, the slopes of high-speed railways mostly occur within a radius of 5 kilometers. Although there are some exceptions, it is a globally accepted standard that there are no crossings on high-speed railways.