Traffic signs should be stored under cover in a dry place and arranged so that warping or disfigurement does not occur. Shelves and vertical compartments are usually constructed in such a manner that the reflectorized face does not come in contact with the adjacent signs.

Store all finished signs off the ground and in a vertical position until installed. Store finished sheet aluminum substrate signs in a weatherproof building. Extruded aluminum substrate signs may be stored outside.

Waxed paper must not be used to protect stored signs.