“Registered unloader” means a person who unloads any farm product in a market. It does not, however, include any of the following:
(a) A producer of farm products, or his or her son or daughter, father, mother, or regularly employed employee.
(b) The operator of any vehicle which is engaged in the transporation of any farm product to market if the operation of such vehicle is subject to the jurisdiction of the Public Utilities Commission and the rate which is charged for such transporation includes the charge for unloading the farm product which is so transported.
(Amended by Stats. 1976, Ch. 1171.)