We will start the ergonomic design of the crane cabin interior from user needs analysis on Nordin and Olson (2008)data on 6 cabin types in Sweden followed by a new sample of 17 cabin types in Serbia in order to find the critical characteristics of existing crane cabins. The collected anthropometric data on a sample consisting of 64 crane operators then will be used to comfortably accommodate the highest possible range of anthropometric measurements between the 5th and 95th percentiles of crane operators, through methodology based on mechanical mechanisms to fulfill user needs not satisfied in existing crane cabins. The second sample containing 10 new crane operators from Serbia will serve to prove our methodology and provide recommendations for designers. The methodology is shown in the flow chart in Fig. 1.