axles. Independent circuits for front and rear brake systems. Warning lights and audible alarm indicate low brake system pressure. Brake system conforms to ISO 3450, SAE J1473. Weights Net Distribution Front axle 34,936 lbs (15,880 kg) Bogie axle, leading 16,500 lbs (7,500 kg) Bogie axle, trailing 16,368 lbs (7,440 kg) Vehicle, Net 67,804 lbs