an evacuation.[]{data-label="snap"}](\DIR/fig4.ps){width="0.5\columnwidth"}

Influence of $\mu$ and $\rho$
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First we look at the averaged evacuation times $T$ in the three main regimes, in dependence of the particle density $\rho$ and the friction parameter $\mu$. All evacuation times are averaged over $500$ samples and measured in update steps. Figs. \[plot\_1\] and \[plot\_1b\] show the influence of a varying $\mu$ parameter on the three regimes for the low density $\rho=0.03$ and the high density $\rho=0.3$.

![Average evacuation times $T$ for a large room in dependence of the friction parameter $\mu$ for the low density $\rho=0.03$.[]{data-label="plot_1"}](\DIR/fig5.eps){width="0.9\columnwidth"}

![Same as fig. \[plot\_1\], but for a higher density of $\rho=0.3$.[]{data-label="plot_1b"}](\DIR/fig6.eps){width="0.9\columnwidth"}

In the low density regime, $\rho=0.03$ (fig. \[plot\_1\]), increasing $\mu$ has only a very weak effect on the evacuation times of the disordered and the cooperative regime. Here the pedestrians move almost independently of each other so that conflict situations, even close to the door, are rare since almost no jamming occurs. The behaviour is different in the ordered regime. All particles find the shortest way to the exit. Even for low densities they will form a jam in front of the door after a short time. But since these jams are small, the evacuation time 