EQUIPMENT FOR PREVENTING UNSAFE ACTIONS, NAMELY, ONE TRAIN CATCHING UP TO ANOTHER ON THE SAME LINE, ANTI-COLLISION AND HEAD ON APPROACH OF TWO TRAINS ON THE SAME BRANCH LINE IN THE NATURE OF ELECTRONIC SPEED CONTROLLERS, ELECTRONIC DEVICES, NAMELY, COMPUTERS, SOFTWARE, PRINTED CIRCUITS, CALCULATORS, ELECTRONIC CARDS; RELAYS, TRAIN OPERATING UNITS

'action':5 'anoth':12 'anti':18 'anti-collis':17 'approach':23 'branch':30 'calcul':46 'card':48 'catch':9 'circuit':45 'collis':19 'comput':42 'control':38 'devic':40 'electron':36,39,47 'equip':1 'head':21 'line':16,31 'name':6,41 'natur':34 'one':7 'oper':51 'prevent':3 'print':44 'relay':49 'softwar':43 'speed':37 'train':8,26,50 'two':25 'unit':52 'unsaf':4

URBAN TRANSPORT VEHICLES, NAMELY, ABOVEGROUND AND UNDERGROUND RAILROAD LOCOMOTIVES AND PASSENGER CARS

'aboveground':5 'car':12 'locomot':9 'name':4 'passeng':11 'railroad':8 'transport':2 'underground':7 'urban':1 'vehicl':3

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