Here’s an interesting question for you. Imagine you have a room full of people. In the middle of the length of one wall there is an emergency exit. Call an emergency and have everyone try to leave as quickly as possible through the exit. Time/count the amount of people that make it through the exit. Now repeat the same experiment, but put an obstruction in front of the emergency exit..like a stanchion or room divider. Do you wind up with more or less people exiting quickly? Surprisingly…more.
A very interesting article. TL;DR version…if you ‘obstruct’ the exit somehow, you reduce the number of avenues of approach which reduces congestion at the exit. You ‘funnel’ traffic more effectively.
I bring this up because, first of all it is fascinatingly counterintuitive, but also because I was thinking about the little habits we get into as survivalists (or, arguably, the little habits we should get into) and the one that I was reminded of was that whenever you enter any space (a building, a fenced area, a room, a theater, a mall, a bus, etc) one of the first things you should do is look for the alternate ways to get out of there other than the way you just came in. Most people do not do this. This means that when someone yells ‘fire’ in that crowded theater, 99% of the people are gonna run to where they came in….you, on the other hand, will head to the exit that is being virtually ignored. Which brought me to another interesting bit of data about emergency exits. Quick: what color is the exit sign? Red, right? Thats what we usually see. But in virtually everywhere else but North America exit signs are green. Why? Because almost universally red means ‘stop’ or ‘danger’, and green means ‘safe’ or ‘go’. So when you are engaged in looking for the exit sign, you have to be cognizant of the fact the exit could be green or red.
Another little known fact, but one that makes epic sense if you think about it: emergency doors must open outwards…and any entrance/exit that uses a revolving door must be flanked by conventional doors. Think about it…a crowd of panicked people surging against an exit door means if you had to pull it open, you’d die. And a revolving door is 50/50 even when there isn’t a panic. Where did these rules come from? Bad times in history.
A fascinating little rabbit hole I wound up in today as I was thinking about remembering to be more diligent about checking out where the exits are.