What's with this non-exit Exit sign on Delta CRJs? I have the pleasure of frequently flying Delta (i.e. Delta Connection) flights on CRJ-700 and CRJ-900 aircraft.  All of them have a bogus EXIT sign between First Class and the main cabin:


This is roughly half-way between the front doors and the wing exits.  This seems to me to make nonsense of any safety regulations requiring EXIT signage.
Normally there is some kind of barrier, a bulkhead or curtain, separating the business class and the common folk in steerage.  In such a case the sign is to indicate that there is an exit somewhere down yonder beyond the bulkhead.

In this case the curtain is not there so the sign kind of hangs there with its nonsensical implication that maybe there is an exit right next to it.  I'll go out on a limb and guess that the regs require the sign to be there between the two classes regardless of whether a visual divider is in place.