Oleo 1D Rail is used for investigating the sensitivity of a whole train Crash energy management system for collision response and was launched in Shanghai, China at this year’s CTRS show. The software has flexible inputs to allow a specific train to be modelled and various collision scenarios simulated. Hydraulic units are then selected from a library of designs and characteristics of linear devices such as rubber, elastomer and deformation tubes. The software reflects the specific geometry accommodating the coupler, buffers and anti-climbers for each vehicle in the rake. Once the basic train and its energy management have been set up, it is possible to run various collision scenarios including train into terminal, train into stationary train, and train into moving train.