Abstract: A Railroad Snapshot and Playback System and Method is disclosed that can provide a messaging/communication infrastructure configured to generate and route current train related messages for multi-region train routing plans. The types of railroad data being tracked can be organized into one or more domains. A method for railroad snapshot playback can include receiving a plurality of events related to train movements in the rail system; creating a first snapshot that can include the plurality of the events, wherein a number of events in the first snapshot can be based on a snapshot increment; receiving a playback request for a playback state of the rail system; pulling a snapshot and events received after the snapshot based on the playback request; building a state of the rail system using the pulled snapshot and the pulled events; operating controls of the rail system based on the state of the rail system.