SUMMARYWe investigate the dynamics of Cooperrider's bogie model with realistic wheel and rail profiles. The results are presented mainly as bifurcation diagramsWe find speed ranges with asymptotically stable forward motion along the track centre line, coexisting attractors, symmetric and asymmetric oscillations and chaos. In contrast to earlier investigations, we also find chaotic transients, which lead to derailment, before the motion might have settled down to stable motionThe influence of a change in the coefficient of adhesion, the wheel base, the gauge and the cant of the rails on the bifurcation points is discussed. Notes*Hans True is now part time with ES-Consult, Staktoften 20, DK-2950 VEDBAEK**Jens Christian Jensen is now part time with Danish State Railways, Pilestraede 58, DK-1112 Copenhagen K.
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True et al. (1994) studied this question.
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