Where Surface Transportation Board incorrectly interpreted statutory language governing railroad traffic, decision was vacated and petition for review granted.The 7th U.S. Circuit Court of Appeals granted a petition for review from a decision of the Surface Transportation Board.Belt Railway of Chicago is the largest switching and terminal railroad in the United States. Belt has more than 250 miles of track in its main yard just south of Midway Airport. Belt is jointly owned by six railroads: BNSF, Canadian National …