The semiotics of restriction

Much of our behaviour in shared urban spaces is guided through street signage whose meaning we learn to decode as urban dwellers. Street signs and plaques, traffic signs and notices, are not only one of the main uses of urban surfaces, but they also create new surfaces, and sometimes entirely new objects, materials and infrastructures. For example, each stop sign is a new urban object, with its own materiality and place in the world, and it encodes specific meanings. These meanings can be represented through graphic conventions (a red circle means a restriction), or through written guidelines: NO LOITERING. NO TRESSPASS.

How many urban signs can you think of that condone, support, or encourage behaviours, instead of restricting or forbidding them?

This is a selection of a few street signs from various cities. Which ones would you add?