Use of a predrawn part in front of high-speed trains or freight trains, characterized in that the advantage in a radio or other wireless connection with the main feature, and is also provided with any one of the speed of the dependent main train vorrausfährt, and extensive sensor system, the track contact, collision, signal recognition, obstacles in the surrounding area, and in the case of need the emergency braking or a reduction in speed of the initiates main train.
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