Both RTGs and straddle carriers are tire-mounted and can classify under 842612, but the distinction matters commercially. A straddle carrier lifts containers by straddling them with its own frame and is typically used for stacking and horizontal transport. An RTG is a larger gantry crane on rubber tires used for stacking containers in rows. CBP has generally treated both as falling within 842612, but importers of high-value RTG equipment should confirm classification, particularly if the unit incorporates significant crane superstructure that might suggest heading 8426 subheadings for gantry cranes.

Yes — these machines are extremely large and heavy, often requiring roll-on/roll-off (RoRo) or heavy-lift vessel transport and specialized port handling. Importers should coordinate with CBP in advance regarding entry procedures for oversized capital equipment, confirm that the receiving port has the infrastructure to offload the unit, and ensure that any required oversize transport permits for inland movement are arranged before the vessel arrives.