Exempting hydroexcavation equipment from certain size, weight, load, and permit requirements on highways

453(1) exempts certain motor vehicles and equipment from most provisions of Code chapter 321 (motor vehicles and law of the road) governing size, weight, and load, and the permit requirements of Code chapter 321E (vehicles of excessive size and weight). Such motor vehicles and equipment include fire apparatus, certain road maintenance equipment, implements of husbandry when moved or moving upon a highway that is not a portion of the interstate, and certain equipment used primarily for construction of permanent conservation practices on agricultural land when moved or moving upon a highway that is not a portion of the interstate. This bill adds hydroexcavation equipment used primarily for digging and excavation to the list of exempt motor vehicles and equipment, when such vehicles are moved or moving upon a highway that is not a portion of the interstate.474 (restrictions by the department of transportation), which include a number of weight restrictions and certain permit provisions.453(2), exempted implements of husbandry and agricultural conservation equipment are subject to additional lighting, warning flag, and time-of-day operation requirements. The bill does not add hydroexcavation equipment to this provision.