6-2-1: APPLICABILITY:
These regulations shall apply to all trucks licensed or actually used for gross vehicle weight in excess of twenty six thousand (26,000) pounds, or exceeding a total length of forty feet (40') or longer under standard practices of the state, and for all explosive, corrosive, hazardous materials and flammable liquid and gas carriers, and any vehicles required to display placards. (1999 R.O. § 20-1-1)