For Tram-Trains the new regularity DIN 5560 (Deutsches Institut für Normung) is relevant targets of that regularity are minimised costs of small hits and in case of a worst case crash a guaranteed survival space for the driver and the integrity of the passenger area. To meet that new regulation, the existing front-end concept with the self supporting frontend was developed further by combining them with two telescopes and a beam which carry most of the forces. The cab was optimised by a detailed dynamic simulation to bear as much energy as possible and to give the driver the needed survival space. The whole frontend-design was tested in a full-scale crash-test at the test centre of the French Railways Eurailtest in Paris-Vitry. The results of the crash-test and the final simulations shows, that with this new unconventional concept the DIN 5560 could be excellently achieved. At 8 km/h no structural elements, but only skirts have to be replaced. At 25 km/h the deformations in the passenger area are only minor and an upwards-moving drivers desk plus small deformations in the drivers feet area guarantees the driver will not become trapped.


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