Mechanically driven active and passive grains as models for egress dynamics

Passages of people or cattle through narrow entrances exits occur in manifold situations. They are difficult to study experimentally, because one has carefully separate objective, physical parameters from subjective, individual motivations, manners and temperament. Mechanically excited model systems can help discriminate some these classes parameters. We characterize active passive particles equal shape mass on a vibrating plate their bottleneck passage dynamics. show fundamentally different scaling behavior.