Whenever, under any statute of this state, the state highway commission or motor vehicle department is authorized to make, adopt or promulgate rules and regulations or rules or regulations, or words of like effect, relating to the registration of vehicles and whenever in any statute of this state there is reference to any such rule or regulation, such authority and such reference shall after the effective date of this act be deemed to so authorize or refer to the secretary of revenue and not the state highway commission or motor vehicle department.