When a teenager was struck by a train after disregarding warning lights and sounds, he was at least 50 percent responsible for the collision and could not recover under Indiana law.The 7th U.S. Circuit Court of Appeals affirmed a decision by U.S. Magistrate Judge John E. Martin, Northern District of Indiana.Ja’Lin Williams was with a group of friends on Whihala Beach in Whiting, Ind., when a police officer told the group they had to leave or they would be arrested for trespassing.The group stayed behind for a few …