2005 California Vehicle Code Sections 30800-30801 CHAPTER 4. BALED HAY

30800.  (a) The Department of the California Highway Patrol shall
adopt and enforce regulations relating to the safe loading,
securement, and transporting of baled hay and baled straw.  In
adopting these regulations, the department shall take into
consideration the nature of the load to be transported, the type of
vehicle to be used, and the different types of binders required to
securely fasten loads to prevent their improper release.
   (b) No person shall transport or cause to be transported any baled
hay or baled straw in violation of the regulations promulgated
hereunder.
30801.  This chapter does not apply to a farmer transporting his own
hay or straw incidental to his farming operations where such
transporting requires that he use the highways, except that this
section does not relieve the farmer from loading and securing the hay
or straw in a safe manner.