the sign posts being fastened by removable means, e.g. screws or bolts

Full Title

Arrangement of road signs or traffic signals; Arrangements for enforcing caution (for obstructing or restricting traffic E01F13/00) > Upright bodies, e.g. marker posts or bollards; Supports for road signs > characterised by means for fixing > for holding sign posts or the like > the sign posts being fastened by removable means, e.g. screws or bolts