Double doors. One thing:

When dealing with outward opening double doors, most people tend to choose the door which points them in a direction opposite that which they will eventually walk. For example, a person exiting a building with the intention of turning right once outside and then walking in the right direction will probably choose the right hand side door, despite the fact that exiting via this door encourages the person to walk in the left direction. The 2-D bird’s eye blue print type diagram below may help with visualizations:

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I believe the choice of which door to choose is hardly an issue for most people exiting a building because the choice relies on a deep rooted fundamental rule of commute which is confirmed many times each day. the rule being: people moving in the direction opposite that which you are moving in belong on your left. The rule is followed both in pedestrian and automobile traffic (save a few countries). Thus, the person who chooses to exit via the right hand door despite not intending to walk in the left direction once outside is likely choosing said door out of consideration for whomever might enter the building through the left hand door. Respect of the aforementioned rule is so great that I doubt even if there were windows in the doors and it was obvious no one was incoming, the outgoing person would still choose the wrong door.