IMO Resolution A.752(18) (International)
"Except where noted, Photoluminescent strips should be no less than 75mm wide. Photoluminescent having a width less than that stated herein should be used only if their luminance is increased proportionally to compensate for their width."
"Photoluminescent materials should provide at least 15 mcd/m² measured 10 minutes after the removal of all external illuminating sources. The system shall continue to provide luminance values greater than 2 mcd/m² for 60 minutes."
"Any Photoluminescent system materials should be provided with not less than the minimum level of ambient light necessary to charge the Photoluminescent material to meet the above luminance requirements."
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