Портовые тягачи с приводом на 4 колеса. От англ. "Roll on Roll off" - закатывать-выкатывать.
Kalmar terminal tractors can easily be adapted to meet the various needs of cargo handling in ports and terminals. They can handle semitrailers, terminal trailers for containers and roll trailers with goosenecks. For RoRo handling, Kalmar 4WD heavy duty tractors have a high tractive effort to easily climb steep ramps and perform tight turns on slippery decks.
WheelsAge.org '2005–pr.