The recent decision by the ocean carrier Maersk to launch a national chassis pool is a significant step in the evolution of intermodal goods movement in the U.S. Unlike in the rest of the world, where truckers usually own and maintain the chassis on which containers are transported, in this country, ocean carriers own this critical link in the supply chain. This has allowed carriers to guarantee the integrity of the chassis and to make sure they are available when demand is greatest. With the U.S. model, however, truckers are required to make a number of non-revenue generating trips returning chassis to their owners, usually at the ports, before picking up or dropping off another container. A chassis pool theoretically allows the driver to make a number of trips using the same piece of equipment as long as it involves a container owned by another member of the pool.