City has been doing that here for years. When I had a dump truck I used to hire it out to the city - got paid by the hour, rate depended on the volume of the dump box (therefore sideboards as high as the blower could handle). Usually, but not always, done at night. I spent many cold nights doing that over the years. Great fun, especially when snow froze in the box. Some guys had heated boxes, snow would stick in their boxes and not in unheated boxes on some nights, and vice versa on other nights. Some guys would throw salt in the box, but if the air temperature was wrong, that just re-froze and made a bigger mess later. I found that if banging the tailgate didn't do it, it was just as easy in the long run to use the shovel. The last truck I had was the Freightliner in my avatar - sold it 10 years ago. Don't miss doing that job.
