UNIT 2 & 1 WERE HEADING NORTH ON THE ICW AT THE SOUTH END OF BAREFOOT LANDING. UNIT 2 STOPPED TO WAIT ON UNIT 1 UNIT 1 DID NOT SEE UNIT 2 STOPPED UNTIL TOO LATE TO STOP. UNIT 1 TURNED RIGHT TO AVOID, SUBJECT ON UNIT 2 JUMPED OFF BEFORE IMPACT. SUBJECT ON UNIT 1 FELL INTO THE HANDLE BARS ON UNIT 2 CAUSING TRAUMA TO HIS LEFT UPPER THIGH.