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PERMALIGHT® photoluminescent safety signs absorb light and emit a bright yellow luminance in full darkness. Photoluminescent signs are available as rigid or flexible. Glowing flexible vinyl is an easy stick-on and can wrap around columns. Glowing rigid signs may be hung from the ceiling or can be installed with screws or double-sided tape. Custom-made signs are available. PERMALIGHT® glowing emergency signage escape path markings can be installed to guide train passengers out to safety in compliance with APTA Standard for Low-Location Exit Path Marking, APTA SS-PS-004 and Standard for Emergency Signage, APTA SS-PS-002.