Section 40I. Airport approach regulations adopted under section forty A, and orders for the taking of property under section forty G, shall be submitted as soon as may be after adoption to the commission for its approval. The commission shall, within thirty days after such submission, approve or disapprove the same; and no such regulation or order shall have force or effect until approved by the commission or until thirty days shall have elapsed without action thereon. Subsequent steps required by law shall be taken after such approval or expiration of thirty days without action.