This unkempt street suffers from poor maintenance, lack of co-ordination and care. The graffiti, fly-posters, overflowing bins and general street clutter do not foster wellbeing, either human or economic. They reduce the enjoyment of the street as a place.
The first step is to make the street look as though someone cares. Start by making sure that the existing management and maintenance systems are working. Remove graffiti, fly-posters. Have bins emptied and benches, etc. maintained.
After that remove as many as possible of the signs and equipment and that make up street clutter.