RTG cranes are operated by onboard drivers. The main function is to load containers from trucks or terminal tractors to the container block and vice versa. Typically RTG`s span 5-8 containers in width and 3-5 in height. Standard RTG cranes are equipped with diesel engines to provide power for travel and lifting. Energy and data transmission to the RTG trolley is provided by festoon systems or energy guiding chains. Depending on the degree of automation in modern container terminals this can be managed by two types of container management cranes: Rubber Tired Gantry Cranes (RTG) or Rail Mounted Gantry Cranes (RMG).Although the task for both types of cranes is very similar â?? to manage input and output of containers into a container block or stack â?? the functionality and technical requirements for these types of machines are significantly different. Advantages 1)Higher hook lift, since the hook can be pulled up between the main girders. 2)Extremely rigid box girder construction and durable trolley design are well suited for heavy service applications. 3)Economical material handling in those area where overhead crane system is not easily available. 4)Safe and efficient 5)Easy installation and maintenance