It is declared to be the public policy of this city that heavy motor trucks, alone or in combination with other vehicles, increase the cost of highway construction and maintenance, interfere with and limit the use of highways for normal traffic thereon, and endanger the safety and lives of the traveling public, and that the regulations embodied in this traffic code with respect to motor trucks, semitrailer trucks and semitrailers are necessary to achieve economy in highway costs, and to permit the highways to be used freely and safely by the traveling public.
(KRS 189.670)