Train control systems used in the railway industry in the nature of detecting and controlling trains and train movement between fixed points of control and determining train location without wayside signals, consisting of locomotive computer display units, back office computer display units, and communication devices connecting the same

'back':38 'communic':44 'comput':35,40 'connect':46 'consist':32 'control':2,15,24 'detect':13 'determin':26 'devic':45 'display':36,41 'fix':21 'industri':8 'locat':28 'locomot':34 'movement':19 'natur':11 'offic':39 'point':22 'railway':7 'signal':31 'system':3 'train':1,16,18,27 'unit':37,42 'use':4 'waysid':30 'without':29

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