I WAS IN FAST LANE ON HIGHWAY APPROACHING SOME CONSTRUCTION AND WAS CUT OFF BY SOMEONE WHO PASSED ME ON THE RIGHT . I STEPPED HARD ON MY BRAKES AND THE PEDAL WENT ALL THE WAY TO THE FLOOR . . I HIT THE PERSON IN FRONT OF ME AND RUINED MY FRONT BUMPER. UPON INSPECTION OF MY VEHICLE I NOTICED BRAKE FLUID DRIPPING FROM FRAME RAIL . .I LOOKED AND NOTICED A LINE RUPTURED DUE TO RUST / ROT AND ALL THE BRAKE LINES WHERE IN BAD CONDITION . I WAS ABLE TO CRUTCH THE TRUCK TO A REPAIR SHOP AND THE REPAIRED THE STEEL LINE. MECHANIC MADE ME AWARE OF THE TERRIBLE CONDITION ALL THE STEEL LINES WERE IN ( FUEL LINES, TRANSMISSION LINES,ECT) AND THAT THE BRAKE BLEEDERS ON FRONT CALIPERS WHERE ALSO ROTTED BEYOND SAVING . . I BELIEVE ALL THESE LINES SHOULD HAVE BEEN STAINLESS STEEL AS THEY ARE EXPOSED TO THE ELEMENTS AND I'M LUCKY TO HAVE NOT TOTALED THE TRUCK , INJURED SOMEONE ELSE AND OR MYSELF. *TR