Free travel for trains
Shifts in the track bed or objects protruding into the track area pose a danger to rail traffic. This applies to tunnels or platforms as well as along railway lines, where vegetation can protrude into the train corridor. In order to maintain the specified clearance profile, it is measured at regular intervals by special measuring trains. For this purpose, Deutsche Bahn (DB) uses the LIMEZ clearance measuring train, equipped with cutting edge measuring technology by Fraunhofer IPM.