The Working Group was invited to explore the possibility of the draft instrument providing separate yet interoperable sets of rules (some of which might be optional in nature) for maritime and road transport.
委员会请工作组探索在文书草案中为海洋运输和公路运输规定单独而相互适用的成套规则（其中某些规则可以是任择性的）的可能性。