A very nice composition - only a bit more road on the top perhaps and a bit less foreground on the bottom. The limited tonality of almost only greyish browns supports the feeling of the dirty street very very strongly. It puts the sign on the image in a very enhanced way - a real accent on a rather dark canvas. Still the accent itself is not an "intruder" but inherently belongs to the scene. I don't know exactly if the yellow stripe is another enhancement or not - I am inclined to say that it is not necessary, but I can't really decide.
An image that manages to capture the atmosphere of the street by using so few elements. And thus a special one!