International Journal of Railway Research

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The flange climb derailment is one of the cause of derailment for a typical switch. The derail Insert Page Break for Printingment for the switch is a complex phenomenon since the contact area is changing dynamically. The contact angle between the wheel flange and the switch point is investegated in terms of the risk on the derailment. The contribution of this study is proving that UIC716R standard recommendation about the switch flange geometry is valid in terms preventing the derailment.