  Current regulations demand that at least two exits should be available for a
safe evacuation during a panic situation. Although the "faster is slower"
effect is expected to take place near the exits, the evacuation time will
improve because of the additional exits. However, rooms having contiguous doors
not always reduce the leaving time as expected. We investigated the relation
between the doors separation and the evacuation performance. We found that
there exists a separation distance range that does not really improve the
evacuation time, or it can even worsen the process performance. To our
knowledge, no attention has been given to this issue in the literature. This
work reports how the pedestrians dynamics differ when the separation distance
between two exit doors changes and how this affects the overall performance.
