Text in the city
Imagine if sociologists, architects, planners, anthropologists started affording genuine attention to studying THIS as a type of space, communication, cultural and creative expression, public discourse, legal discourse - the list goes on.
A good place to start is just by READING EVERYTHING.
Public writing
Writing on city surfaces makes publics through sharing language, information, and the spaces of writing themselves. I can't read this text but I am familiar with the urban experience of encountering it, and can intuit its function.