[paul_f]

As an example of this, most trash on the side of roads comes from stuff falling off commercial trucks, sanitation trucks, work trucks. Not from people chunking junk out the window of their car. Yet all the guilt is placed on individuals.

[tekknik]

I once got community service for reasons, and will have to disagree with this. Sanitation trucks are usually covered, commercial trucks are sealed and work trucks tend to not want their tools to fall off. Most of the trash we picked up were soda cups, cans, cigarette butts and empty cigarette packs (and in one case weed stashed in an empty cigarette pack). What gives you the idea that most of the trash is not from people throwing crap out of their cars?