Worst emergency instructions ever

This was on a bus (the kind you hire that comes with a driver and miniature overhead video screens). If you can't tell, it's right underneath the window. And it's apparently important.

When I first saw it, my thought was: boy, what a poorly made sign. In an emergency, where time is of the essence, people are going to stop and try to understand it and waste seconds, possibly even minutes, determining its meaning. 

Well, it's been over a day now and I still haven't firmly decided on how to interpret it. If you believe to know what it means, please please let me know.

Oh yeah, and here's a clue: the window on the other side has a sticker that's a mirror image of this one.