ABSTRACT
Although there is general agreement on the importance of this approach, what it actually means remains unclear. For example, it has been defi ned as: “the coordinated passage of goods and people by way of two or more of the primary modes of transport (sea, air, rail, road) from origin to destination as defi ned by the passenger or the shipper and consignee, with a single travel directive bill of lading or ticket and a single price covering the entire trip” (Alt et al., 1997, p. 34).
