No. Safety signs should be reliableat all times. As such, constructing them to be dependent on electricity or batteries defeats their purpose. What if the battery energy runs out or electricity gets cut off? Unless a workplace has enough budget for power generators, safety signs in the aforementioned situations would become useless.
As such, TRADESAFE designed workplace safety signs to be highly reflective so that they remain visible even in low-light conditions. This is made possible by the glass bead reflective film coating.