Whelen, the maker of those bright ass lights, has come out with a new product called the Door Ease. They are door chocks that incorporate LED and Audible Alert so that you can find your way out. It looks like a brillant idea to ID the way out. Here is some stuff from thier web site:
Door Ease™ SUPER-LED® FLASHING EGRESS IDENTIFYING SAFETY SYSTEM
Door Ease marks entry, travel, and exit points for fire and emergency personnel to get in and out of structures safely. High performance LED technology provides a bright, reliable flashing or steady-burn light which is unsurpassed in low visibility operations. Door Ease also has a warning tone/flashing mode for added impact.
LED technology provides super bright, super effective warning. Compact, heavy-duty polycarbonate door wedge marks interior search and rescue routes. Creates a virtual illuminated
entry/exit route. Three modes: flashing, flashing and audible alert, and steady-burn. Warning tone has a sound output of 95dB. LEDs are rated for 100,000 hours of operation.
http://www.whelen.com/pb/Automotive/...d_Trac-Pak.pdf