It shall be unlawful for any person to use any vehicle in hauling gravel, sand, dirt, or other loose materials, over or along the streets and alleys or other public places of the city, except in vehicles with such tight-fitting beds that such gravel, sand, dirt, or other loose materials will not fall through the cracks and crevices to the ground or pavement. It shall also be unlawful to fill the bed of such vehicles so full that such materials will slide off the top of the loads over the sides of the bed to the ground or pavement of the streets, alleys, or other public places.
('80 Code, § 22-1) Penalty, see § 10.99