Abstract
We consider a simple microscopic follow-the-leader model of N identical cars on a circular road. In the classical setting, a car is not allowed to reach its leader. If it happens at a particular time t E , we propose to extend the model beyond this time t E : The idea is to define a physically reasonable leader for each car. Mathematically, the resulting model is a kind of Filippov system. The objective is to study a long time behavior of the model. In case N = 3 , we observed several invariant patterns which apparently exhibit spatial–temporal symmetries. We managed to classify and identify two kinds of rotating waves. The classification exploits symbolic dynamical notions.
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