Paris is a big city, with plenty of - sometimes - careless people, pollution, dogs(!), etc. and it needs to be cleaned regularly. For this, the Paris town hall uses an army of sweepers and cleaning vans, like this one that I photographed at 8 o'clock at rue Doudeauville , while the sun was still low (hence the reflexion on the sidewalk...). About 1 500 km of streets are cleaned every week (2 400 km are swept everyday); a never ending story.