No vehicle shall be driven or moved on any street
or highway nor shall any owner of any vehicle knowingly permit such
vehicles to be driven or moved on any street or highway unless such
vehicle is so constructed or so loaded as to prevent its contents
from spilling, dropping, sifting, leaking or otherwise escaping therefrom.
Vehicles loaded with any material which may be blown about by the
wind shall be suitably covered to prevent the contents from being
blown upon the street or highways.