No, you cannot make the street dirtier than it already is

If you live in Manhattan you can tell the difference between a city bus, delivery truck, and a taxi cab just by the very distinct and ostentatiously loud noises they make.  Every Tuesday and Thursday on my walk to work I am greeted by the New York Department of Sanitation's beloved street sweeper, a monster truck that comes trudging down the streets and avenues of the city, weaving in and out of cars who decided not to follow the alternate-side parking codes that day.  One would assume that this vehicle is used to clean the mean streets, leaving a shiny finish for pedestrians to stride upon.  Unfortunately, assuming that would be incorrect because this truck does nothing but slosh around the trash and grime pitted near the curbs.  Not only that, whatever 'cleaning fluid' comes out of the super-sized scrubbing brushes positioned below does not look at all sanitary.  Anytime I hear the roar of the engine approaching, I shimmy up against the closest building as the brushes spew out the fluid infusing with trash juice and debris, which in turn splash on to the sidewalk in attempt to soil my cute fall boots.  Once it finally rides by, the aforementioned liquid now gives the street an aroma of fresh garbage peppered with 5 dogs walked in that very spot that morning and lo mein left for the mice the night before. I didn't think it was possible but I'm pretty sure the street sweeper is actually making the street more soiled; how about we suspend service for a while so I can save my tax dollars and walk to work in undisturbed filth?