(a) A motor vehicle transporting migrant agricultural workers for a total distance of 100 miles or more must have a passenger compartment in accordance with this section.
(b) Each passenger seat must:
(1) be securely attached to the vehicle during use;
(2) be not less than 16 or more than 19 inches above the floor;
(3) be at least 13 inches deep;
(4) be equipped with backrests that extend at least 36 inches above the floor;
(5) have at least 24 inches of space between the backrests or the edges of the opposite seats when positioned face to face;
(6) provide at least 18 inches of seat area for each passenger;
(7) not have any cracks that are more than one-fourth inch wide;
(8) not have any cracks in the backrests, if slatted, that are more than two inches wide; and
(9) have any exposed wood surfaces planed or sanded smooth and free of splinters.