Any peace officer, which term shall include forest wardens and game protectors, shall have the power to stop, inspect and search without a warrant any person or vehicle observed transporting five (5) or more Christmas trees, five (5) or more pounds of minor forest products, and/or cedar products for the purpose of ascertaining whether or not the same are being transported in violation of the provisions of this chapter. Any hindrance or interference with any such officer so engaged shall be prima facie evidence that the person interfering with or hindering such officer is guilty of a violation of this act.