Transportation Technology Center, Inc. (MxV Rail), through a research project funded by the Federal Railroad Administration (FRA),  developed a Concept of Operations (ConOps), documented the infrastructure design, and developed software to support a virtualized fully scalable train braking simulation environment (FSTBSE) that expands upon the capabilities of an existing simulation environment originally developed for evaluation of braking algorithms for Positive Train Control (PTC) applications. The new environment will provide the ability to complete simulations more efficiently and support a concept for on-demand simulations to support new software functions and processes with the potential to improve the safety and operational efficiency of train control and other applications, such as Interoperable Train Control (ITC) PTC and Energy Management Systems (EMS).