The rates of every radio common carrier shall be just, reasonable, and not unduly preferential; the service of every such carrier shall be adequate and not unduly preferential, and the rules and regulations of every such carrier shall be just, reasonable and not unduly preferential. It shall be the duty of the commissioners to prescribe appropriate rules and regulations, and to make such orders as may be necessary and proper, to insure that such radio common carrier rates, services, rules and regulations are reasonable, just, adequate and not unduly preferential.
La. R.S. § 45:1502