Two adults and a child suffered minor injuries today when a driver collided with a Metro train in the Medical Center about 2:30 p.m. today. Metro police officers said a woman ran a red light at Fannin and Binz, where lights in all four directions turn red when a train is passing. The driver, with an adult and child passenger, then stopped on the Metro tracks, police said, and was struck by a train. Police said no one on the train was injured. It is the 31st accident involving a Metro train since November.