As used in this chapter, the following terms shall have the meanings
indicated:
COMMERCIAL VEHICLE
Any truck, trailer, semitrailer or tractor-trailer combination used
for commercial purposes in the transportation of property.
No person shall operate or move a commercial vehicle, while transporting
sand, gravel, refuse or other loose material, over any city street unless
its load or cargo is secured in such a manner so as to keep the load or cargo
firmly in position and to prevent thereby the falling of any part of such
load or cargo of such vehicle onto a city street.
A violation of this chapter shall be punishable by a fine of not more
than $250 or imprisonment for not more that 15 days, or both.