increase of the conflict density in the ordered regime at the end of the evacuation for $\mu=0$. During most of the time of the evacuation the majority of particles are forming a big jam and do not contribute to the conflict density. At the end of the evacuation the jam nearly is dissolved and only few particles are left in the room near the exit conflicting about the unoccupied sites.

![Number of conflicts in dependence of the time for all three regimes; $\rho=0.03$ and $\mu=0$.[]{data-label="plot_13"}](\DIR/fig23.eps){width="0.8\columnwidth"}

![Same as fig. \[plot\_12\], but for $\rho=0.03$ and $\mu=0.9$.[]{data-label="plot_14"}](\DIR/fig24.eps){width="0.8\columnwidth"}

Figs. \[plot\_13\] and \[plot\_14\] show the number of conflicts and the conflict density during an evacuation for the density $\rho=0.03$ and $\mu=0.9$. Since there are now less particles in the system, they will not meet each other that often in the disordered and cooperative regime. For times smaller than the evacuation time of the ordered regime the number of conflicts and the conflict density are largest in the ordered regime, where all particles are packed in a small region near the exit.

Column in front of the exit {#sub_column}
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As an example for safety estimations in architectural planning we investigate how evacuation times change if 