Most of the confusion in a warehouse comes from it not being clear what goes where: a notice pinned to the board is forgotten, a line on the floor is seen every day. Marking has two layers, what the regulation requires and the site's own legend.
Under Turkey's Regulation on Health and Safety Signs (2013), roads open to vehicle traffic are marked with continuous yellow or white strips, chosen with the floor colour in mind, drawn to show a safe distance between vehicles and objects and between vehicles and pedestrians. Fire equipment locations are marked permanently in red; places with a risk of collision or falling are marked with yellow-black or red-white stripes.
The site sets the meaning of container park, clean and dirty areas, quarantine, dispatch staging and areas kept clear in a short legend. One colour carries one meaning and does not clash with the regulation's red (prohibition, fire), yellow (warning), blue (mandatory) and green (exit, safe).
The area owner and the update method are written down, worn lines are repaired on site walks, and no new code is added before the old line's meaning is removed.
