In a unanimous opinion by for the three-judge panel by Judge Janice Rogers Brown, the court sent the litigation back to the district court with instructions to reconsider the class certification issue in light of the U.S. Supreme Court precedent of Comcast v. Behrens.
In re: Rail Freight Fuel Surcharge Antitrust Litigation, No. 12-7085 (U.S. Court of Appeals for the D.C. Circuit, August 9, 2013). Copy of court-provided opinion available here.