Advantages:its mobility gives a rubber tyred gantry crane wide appliance.Being mobile, RTGs are often powered by diesel generator systems (gensets) of 100 to 600 kW. Due to the lack of an electrical grid to dump energy when containers are being lowered they often have large resistor packs to rapidly dissipate the energy of a lowering or decelerating container.Diesel-powered RTGs are notorious polluters at ports, as each burns up to 10 gallons of diesel fuel per hour.